diff --git a/src/main/kotlin/ru/otus/cars/Car.kt b/src/main/kotlin/ru/otus/cars/Car.kt
index 559978c..db406ba 100644
--- a/src/main/kotlin/ru/otus/cars/Car.kt
+++ b/src/main/kotlin/ru/otus/cars/Car.kt
@@ -28,4 +28,8 @@ interface Car : CarInput {
      * Внутренний статический класс - номерой знак
      */
     data class Plates(val number: String, val region: Int)
+    /**
+     * Горловина и бак
+     */
+    var mouth: TankMouth
 }
\ No newline at end of file
diff --git a/src/main/kotlin/ru/otus/cars/CarOutput.kt b/src/main/kotlin/ru/otus/cars/CarOutput.kt
index 875339f..fff0c37 100644
--- a/src/main/kotlin/ru/otus/cars/CarOutput.kt
+++ b/src/main/kotlin/ru/otus/cars/CarOutput.kt
@@ -8,4 +8,10 @@ interface CarOutput {
      * Скажи текущую скорость
      */
     fun getCurrentSpeed(): Int
+
+    /**
+     * Покажи уровень топлива
+     */
+
+    fun getFuelContents(): String
 }
\ No newline at end of file
diff --git a/src/main/kotlin/ru/otus/cars/GasStation.kt b/src/main/kotlin/ru/otus/cars/GasStation.kt
new file mode 100644
index 0000000..d721a6d
--- /dev/null
+++ b/src/main/kotlin/ru/otus/cars/GasStation.kt
@@ -0,0 +1,28 @@
+package ru.otus.cars
+
+import kotlin.random.Random
+
+object GasStation {
+    fun fuelCar(car: Car) {
+        try {
+            println(car.carOutput.getFuelContents())
+            when (car.mouth.type) {
+                FuelType.LPG -> fuelWithLpg(car.mouth as LpgMouth)
+                FuelType.PETROL -> fuelWithPetrol(car.mouth as PetrolMouth)
+            }
+            println(car.carOutput.getFuelContents())
+
+        } catch (e :NotImplementedError) {
+            println("Опять этот таз приехал")
+        }
+    }
+
+
+    private fun fuelWithLpg(tankMouth: LpgMouth) {
+        tankMouth.fuelLpg(Random.nextInt(0, 200))
+    }
+
+    private fun fuelWithPetrol(tankMouth: PetrolMouth) {
+        tankMouth.fuelPetrol(Random.nextInt(0, 200))
+    }
+}
\ No newline at end of file
diff --git a/src/main/kotlin/ru/otus/cars/Tank.kt b/src/main/kotlin/ru/otus/cars/Tank.kt
new file mode 100644
index 0000000..f2b801a
--- /dev/null
+++ b/src/main/kotlin/ru/otus/cars/Tank.kt
@@ -0,0 +1,46 @@
+package ru.otus.cars
+
+interface Tank {
+    var fuelLevel: Int
+
+    fun getContents(): String
+
+    fun receiveFuel(liters: Int)
+}
+
+enum class FuelType(val type: String) {
+    PETROL("Бензин"),
+    LPG("Сжиженный газ")
+}
+
+abstract class TankMouth(val type: FuelType): Tank {
+    override var fuelLevel: Int = 0
+    override fun getContents(): String {
+        return "Тип топлива: ${type.type}, уровень $fuelLevel"
+    }
+
+    override fun receiveFuel(liters: Int) {
+        open()
+        fuelLevel += liters
+        close()
+    }
+
+    private fun open() {
+        println("Горловина открыта")
+    }
+    private fun close() {
+        println("Горловина закрыта")
+    }
+}
+
+class PetrolMouth: TankMouth(FuelType.PETROL) {
+    fun fuelPetrol(liters: Int) {
+        receiveFuel(liters)
+    }
+}
+
+class LpgMouth: TankMouth(FuelType.LPG) {
+    fun fuelLpg(liters: Int) {
+        receiveFuel(liters)
+    }
+}
\ No newline at end of file
diff --git a/src/main/kotlin/ru/otus/cars/Taz.kt b/src/main/kotlin/ru/otus/cars/Taz.kt
index 49df937..9442680 100644
--- a/src/main/kotlin/ru/otus/cars/Taz.kt
+++ b/src/main/kotlin/ru/otus/cars/Taz.kt
@@ -23,6 +23,13 @@ object Taz: Car {
      */
     override fun getEquipment(): String = "Крыса"
 
+    /**
+     * Горловина неисправна
+     */
+    override var mouth: TankMouth
+        get() = throw NotImplementedError("Вместо горловины - дырка от бублика")
+        set(_) {}
+
     /**
      * Руль вправо на [degrees] градусов
      */
diff --git a/src/main/kotlin/ru/otus/cars/Vaz2107.kt b/src/main/kotlin/ru/otus/cars/Vaz2107.kt
index be857d2..b166c34 100644
--- a/src/main/kotlin/ru/otus/cars/Vaz2107.kt
+++ b/src/main/kotlin/ru/otus/cars/Vaz2107.kt
@@ -20,6 +20,7 @@ class Vaz2107 private constructor(color: String) : VazPlatform(color) {
         override fun build(plates: Car.Plates): Vaz2107 = Vaz2107("Зеленый").apply {
             this.engine = getRandomEngine()
             this.plates = plates
+            this.mouth = LpgMouth()
         }
 
         /**
@@ -59,7 +60,7 @@ class Vaz2107 private constructor(color: String) : VazPlatform(color) {
 
     // Выводим состояние машины
     override fun toString(): String {
-        return "Vaz2107(plates=$plates, wheelAngle=$wheelAngle, currentSpeed=$currentSpeed)"
+        return "Vaz2107(plates=$plates, wheelAngle=$wheelAngle, currentSpeed=$currentSpeed, fuelLevel=${this.mouth.fuelLevel})"
     }
 
     /**
@@ -67,6 +68,11 @@ class Vaz2107 private constructor(color: String) : VazPlatform(color) {
      */
     override val carOutput: CarOutput = VazOutput()
 
+    /**
+     * Горловину поставят при сборке
+     */
+    override lateinit var mouth: TankMouth
+
     /**
      * Имеет доступ к внутренним данным ЭТОГО ВАЗ-2107!
      */
@@ -74,5 +80,9 @@ class Vaz2107 private constructor(color: String) : VazPlatform(color) {
         override fun getCurrentSpeed(): Int {
             return this@Vaz2107.currentSpeed
         }
+
+        override fun getFuelContents(): String {
+            return this@Vaz2107.mouth.getContents()
+        }
     }
 }
\ No newline at end of file
diff --git a/src/main/kotlin/ru/otus/cars/Vaz2108.kt b/src/main/kotlin/ru/otus/cars/Vaz2108.kt
index 27b83b8..bdbde44 100644
--- a/src/main/kotlin/ru/otus/cars/Vaz2108.kt
+++ b/src/main/kotlin/ru/otus/cars/Vaz2108.kt
@@ -21,6 +21,7 @@ class Vaz2108 private constructor(color: String) : VazPlatform(color) {
         override fun build(plates: Car.Plates): Vaz2108 = Vaz2108("Красный").apply {
             this.engine = getRandomEngine()
             this.plates = plates
+            this.mouth = PetrolMouth()
         }
 
         fun alignWheels(vaz2108: Vaz2108) {
@@ -63,7 +64,7 @@ class Vaz2108 private constructor(color: String) : VazPlatform(color) {
 
     // Выводим состояние машины
     override fun toString(): String {
-        return "Vaz2108(plates=$plates, wheelAngle=$wheelAngle, currentSpeed=$currentSpeed)"
+        return "Vaz2108(plates=$plates, wheelAngle=$wheelAngle, currentSpeed=$currentSpeed, fuelLevel=${this.mouth.fuelLevel})"
     }
 
     /**
@@ -71,6 +72,11 @@ class Vaz2108 private constructor(color: String) : VazPlatform(color) {
      */
     override val carOutput: CarOutput = VazOutput()
 
+    /**
+     * Горловину поставят при сборке
+     */
+    override lateinit var mouth: TankMouth
+
     /**
      * Имеет доступ к внутренним данным ЭТОГО ВАЗ-2108!
      */
@@ -78,5 +84,9 @@ class Vaz2108 private constructor(color: String) : VazPlatform(color) {
         override fun getCurrentSpeed(): Int {
             return this@Vaz2108.currentSpeed
         }
+
+        override fun getFuelContents(): String {
+            return this@Vaz2108.mouth.getContents()
+        }
     }
 }
\ No newline at end of file
diff --git a/src/main/kotlin/ru/otus/cars/main.kt b/src/main/kotlin/ru/otus/cars/main.kt
index 978d0ef..65a8ace 100644
--- a/src/main/kotlin/ru/otus/cars/main.kt
+++ b/src/main/kotlin/ru/otus/cars/main.kt
@@ -1,21 +1,20 @@
 package ru.otus.cars
 
 fun main() {
-    println("\n===> drive cars...")
-    driveCars()
-    println("\n===> inner test...")
-    innerNestedCheck()
-    println("\n===> garage make...")
-    garageMake()
-    println("\n===> model special...")
-    println("\n===> get equipment...")
-    getEquipment()
-    println("\n===> get color...")
-    getColor()
-    println("\n===> tech checks...")
-    techChecks()
-    println("\n===> Taz...")
-    println(Taz.color)
+    println("\n===> fuel cars...")
+    fuelCars()
+}
+
+fun fuelCars() {
+    val carLine: List<Car> = listOf(
+        Togliatti.buildCar(Vaz2107, Car.Plates("123", 77)),
+        Togliatti.buildCar(Vaz2108, Car.Plates("321", 78)),
+        Taz
+    )
+
+    carLine.forEach{
+        GasStation.fuelCar(it)
+    }
 }
 
 fun driveCars() {