An estimated guess how much force is required to move a gas and or brake pedal? Also the force required to move a steering wheel?
In determining the amount of force used to brake pedal, you will have to determine the pressure to the brake pads which differ according to the motor. The force will also be determined by how far the pedal moves and what limits its motion.
Try it with a push device.
You can use a spring balance to find it out.
You can also use a fish scale. Hook it up to the steering wheel, and pull on it until the steering wheel moves.