re: starter, I think DAOX responded to this question in another thread, but IIRC the most notorious hypermiler using an automatic got 80,000 out of his starter.
Folks are spending hundreds per year idling, that will likely go up.
A starter for your 07 car is less than $200 from autozone. A starter for my car is $75, without any shopping around. My annual fuel costs for idling are somewhere around $150.
So if in my scenario, I would have to replace starters twice a year to lose money on the deal. My starter should last 16 years, since I bump start half the time.
The break even point is somewhere around a year on average for parts if I had to guess. Labor costs is at your discretion, at it's essence it is removing two bolts and two terminals, though some starters ARE a pain to get to. I don't mean the "I don't feel like getting my hands dirty" pain, but like you have to take off the intake manifold pain. Ah well, just more bolts
