For the past 20 years the automechanics of my family would lament the computers in the cars make parts of the car impossible to fix without a hookup device. Then over time they would complain that doing something that would be easy to do on an older car was almost as if the engineers designed the cars not to be worked on. And just on Slashdot in the past 2 years, an article was posted about how some car companies were thinking of making a TOS that says you can't work on your own car. I understand about liability and them not wanting to be responsible if you get hurt working on your car, but for that to be a reason to take it away from you isn't right. I don't care if it gets 5mpg less, but a car or truck that could be worked on could be a marketable thing if you could get around liability. Of course this idea is probably just as bad as The Homer Simpson Car. Liability laws are out of hand, and one of the reasons we have to pay for costly insurance.