Eagle County County Colorado looks back on three years of having 20 Prius in their fleet of county vehicles.

Need a reason to move to Colorado?  Here's one: the state will give you up to a $6,000 tax credit toward converting your plain-old Prius into a snazzy PHEV Plug-In Prius capable of getting 2,500 miles on a tank of gas.  Clayton Cornell over at Gas 2.0 put together a great article on the ins and outs, and he crunched the numbers for all you "When will it pay itself off?" people.