These are the cars that cause us to mumble under our breath when they drive by. So smug. So reliable. Sure! Drive right past our shop! How's a mechanic supposed to make a monthly boat payment with so many of these things on the road? Yes, the cars we hate most, as mechanics, are the cars that provide us with the fewest repair dollars. I mean, you see a '99 Jeep Grand Cherokee roll into the shop and you can practically smell the transmission rebuild. But the cars on this list? You'll be lucky to sell their owners a set...