I found another website that allows you to compare cars side-by-side on annual fuel cost, miles per gallon for city and highway, greenhouse gas emissions, and gives an air pollution score. It’s pretty nice, as it compares cars from 1985 to current and even lets you view cars that don’t need as much gasoline.
They also supply a list of 2007 most and least fuel efficient vehicles, which Toyota Prius ranked as #1. There is also information on tax credits for new owners of hybrids. Check this out and make sure you include your new hybrid purchase next time you are doing your taxes.