Well, when driving at highway speeds (80/kph+) their is a shimmy/shake/vibration in the seat, gas pedal, brake pedal 40% of the time, steering wheel a bit too. as well as occasional (60% of the time) hard/rough shifts, late to a degree as well. I know the shifting problem is the transmission, but i have had wheel bearings, strut plates and tires all replaced in an effort to take care of the shake and i am curious if the transmission could be causing that problem as well as the shifting problem. The car is unbelievable with the exception of this annoying, and likely extremely expensive problem. But if anyone has any insight as to what the hell is causing this vibration problem, that'd be swell.