leaflet widget to overlay selected ways/relations from OSM and OHM on embedded map. default is race tracks, but the tags can be overridden if needed.
Needs to be updated to current leaflet, but there is an issue with L. no longer being current and some of the leaflet plugins used are no longer being maintained.
Watkins.html contain a usage example. You need to supply your own mapbox key to use mapbox images.
Canal.html contains an example of using different tags for relation and way searches.
The race track examples may be viewed at http://www.na-motorsports.com/test/
The Canal example may be viewed at http://www.averillpark.net/Canal/