My mother-in-law has had a Mercedes for four years. It has a self-parking feature. She still doesn't know how to use it and probably never will. She couldn't po

My mother-in-law has had a Mercedes for four years. It has a self-parking feature. She still doesn't know how to use it and probably never will. She couldn't possibly assign a function to the left scroll wheel either. And she's Mercedes Benz's target market.