The iCar won't crash.
It will just breakdown like all other cars do.
Like all Macs, the iCar won't warn you it's dying, it will just stop in the middle of traffic during rush hour.
Like the iPod, the iCar will be part of a monopoly that nobody questions or notices. You won't have to choose what gas station to go to. Apple will decide that. That will be nice when gas prices skyrocket and you can't shop around.
Also like the iPod, you won't be able to get to any of the iCar's working parts so you will have to take car in to the dealer for everything.
Since Apple will probably be involved in the service, you will have to convince them the car actually disabled. There nothing like fighting with snotty tech support/service.
Worst of all, the iCar will be both a Mexican-built and Chinese-built abomination.
In my recent column, iCar future features, I speculated how an iCar might work. What kind features would you expect an iCar to have?