[1] http://www.statemaster.com/graph/ene_gas_con_percap-energy-g...
However, you won't get much insight from plotting this data geographically: a table (as in that link) is enough. Basically you get exactly what is expected: Daniel Patrick Moynihan's "Law of the Canadian Border" - southern states have more social problems.
If you want high-resolution geographical data for purposes such as finding problem roads, that would be a lot more difficult - you need to have a graph of the road network (from e.g. Open Street Map), with traffic data attached to the arcs of the network (I don't know of any public access databases like that, although such data is commercially available for road planning) plus accident locations accurately mapped to the roads. I suspect it wouldn't be a quick project to do.