I agree that the DOT tests are stupid - many of them are based on the hydrocarbins coming out whien it is driving. I don't have problems with the mpg - we average 56mpg each tank(when I am driving - husband averages45mpg). The video game aspect helps more than with othey hybrids I have driven.
The batteries up here in Wisconsin have to be disposed of seperately and recycled anyway. And Toyota has a recycling program in effect for Prii batteries.

Rena