Wow, wtf is going on in Wyoming?
Thanks for the links
Here's some data to mull over...
BTS | National Transportation Statistics
Alas, to see it in graph form, you need to do it yourself...
I did
write a post awhile back that had this graph based on the BTS data
The y axis is gallons... Which is per capita car (not person). Note that in 1970 the first emissions legislation was enacted (put into effect in 1975).
MPG data to go with that
![](http://primitiveengineering.com/fe/milespergallon.JPG)