Originally Posted by MGBGT

I just used the calculator to determine that if I bought a Chevy Silverado 1500 "Hybrid" (please note the "quotes"!!!), vs a Ford F-150, I would have a lifetime savings of $22.96, but a lifetime savings in Carbon dioxide of 12,422 lbs.
I believe the CO2 savings are largely on account of the fact that the Silverado gets slightly better mileage than the 150 anyway, and not due to the "hybrid" feature.

Comparing my Prius II to the F-150, I would have a lifetime savings of $19,176 and of 92,360 lbs in carbon dioxide!

Unfortunately, the cars available as a non-hybrid comparison are limited, for example, the site does not allow a comparison of the HAH to the plain Accord.

The HCH vs plain civic yields a lifetime (7 years) savings of $18,490, and of 16,458 lbs of CO2.

FEH vs FE: lifetime savings $3,415 and 37,558 lbs of CO2.
Not much money savings in the FEH, but much more in CO2 'savings' than the HCH, mostly because the FE non-hy as an SUV produces large amounts of CO2.

FEH vs plain Civic: lifetime loss of $-6,505, lifetime "loss" of -6,293 lbs of CO2 (or greater production of CO2).

HAH vs plain Civic: lifetime loss of $-8,966 and of -4,186 lbs of CO2 (more CO2 production than plain Civic).

For all of these other than the Sliverado "hybrid" I entered a $2,000 tax deduction.
All are based on 7 years life and 15k annual miles, and gas at $2,20 per gallon.

Fun games!

Cool link post, thanks!