This vehicle had been in the shop for over a month due to the emergency brake system freezing up causing my rear wheels to lock up, to smoke and rotors become damaged. Dealership could not find anything wrong as could not duplicate the issue. They did say that the EBS did engage while driving down the interstate at 70+ MPH. No reason why. Not normal! It was returned to me. Then 1 week after getting it back the vehicle started shaking violently when at speeds in excess of 65 for about 30 seconds. The RPM goes from 2 to 4 with difficult acceleration. When it gets back to normal, there is a definite clunk. Do not get any warning lights. Has happened 3 time in less than 2 weeks. Is not safe to drive! It is back at the dealership. Something is wrong with the vehicle. Have a video