Actually, doing business from home is part of the agenda I didn't mention. And I agree with you that by the time you add in the "easy monthly payments" on a hybrid, you'll have to drive it to the moon and back before you break even. Not paying any more taxes than you need to is admirable.
Sorry, you'll never break even. Depreciation hasn't been figured into the mix, not to mention the additional maintainance cost yet to be attributed to these "hybrids" as they haven't been out there long. My engineering buds say new battery packs will be needed at the 50,000 to 75,000 mile range at a current cost of about $5500.