Problem #1... Probably a small car problem; younger people could probably take the roller coaster ride on the Interstate but either the Driver or the Car is eventually going to have severe motion problems. It is a car that is definitely not suitable for the elderly crowd. Problem #2... Car engine then developed a "Stall at Stops" problem and would then jump to high acceleration on its own...not sure if it is coming from problem #1 or the Engine Computer just has this coding defect in it that eventually shows up with usage. Problem #3.... The Car seat design is so bad that it causes pinched nerves for both passenger/driver....the dealership said to go out and buy some Seat Pads but this design shouldn't have been allowed in the first place.