Ok, so let me get this straight.  You want them to make you a car and you want to be able to control the car in whatever direction you want and have a smooth ride.  Next you'll be asking for controls on your steering wheel, then it will be a suspension system that will react to road conditions and if you don't stop texting while you drive maybe we should just have the car steer for it's self and you can keep playing with you're phone.

Steering and Suspension