6, including all 4 wheels, spare wheel and steering wheel.
4
5. Four actually on the car and one spare Don't forget the steering wheel.
There are no wheels on a cable car it goes on a cable
Your front wheels should be turned so that, if your car were to roll it would turn into the curb. If your car is facing downhill, the front wheels should be turned into the curb. If your car is facing uphill, your front wheels should be turned away from the curb.
they should be neither they should have the correct ratio to how big the car is you cant have a monster truck with little wheels
4 wheels
Each car has 8 wheels.
It depends on how many Johns and how many cars. "Someone went into the parking lot of the cathouse and stole all the Johns' cars' wheels." "John has fifteen cars; John's cars' wheels are worth more than the whole of my car." "Our car has been purchased by Elton John and Olivia Newton John, and believe me, the Johns' car's wheels stay on the ground." "My friend John has just bought a car but I think John's car's wheels need replacing."
3
3
Unless a brake is engaged, the wheels on a car in neutral can rotate backwards. If the car is in gear, wheels attached to the power train probably will only rotate backwards if the car is in reverse gear. If it is in forward gear or "park" they should not rotate backwards. Wheels not connected to the power train should be able to rotate either direction.
You can use a variety of thing like cds, bottle caps, and wheels from a toy car.