MY SOLUTION IS… Four small tires will be installed on the bottom of the car just beside the main tires of the car. Now these tires, when launched, will come out facing sideways with respect to the main tires of the car and lifts it few centimeters upwards and shifting it to the left or the right depending on the driver’s wish. What the driver only needs to do is stop his/her car perfectly adjacent to the parking space he/she found. Once they have done that, they only need to push one button (which will be installed on the dashboard which will order the tires to come out and shifts the car sideways) and the tires do the rest. This system has dual benefits because as I mentioned in the second question, the tires will be a great use of help for a sandwiched car as they move it safely to the outside without any contact with the cars in front of and behind him/her. The driver will also save his/her time and energy from trying to get the car out by moving it back and forth by readjusting the wheels several times. Hence, the parked car can no longer be wedged in ever.