Re: I don't get it either
I recently had a problem with a car-hire booking and ended up being given a very fancy Mercedes for the week instead of the bottom of the range Ford (or whatever) I'd asked for. This thing would sometimes brake all by itself. The wing mirror flashed distractingly when a car I'd seen ages before was about to overtake. The steering wheel rumbled if I changed lanes to overtake without indicating (ok) and when I pulled back into the slower lane without indicating (not ok, according to my rozzer friends). Finally, it took three of us (three PhDs, two full Professorships) ten minutes to work out how to get the petrol filler open. It went like the clappers, but didn't feel fully connected to the ground even at quite legal speeds. I absolutely hated it. It did project a lovely Mercedes logo onto the ground when you opened the doors though. Time to stock up on vintage BMWs or something.