Overdrive lets the engine run slower at highway speeds. This saves on gas.
the overdrive is used to save gas. it is an additional gear after your final gear in the transmission. this gear usually kicks in at higher speeds (maybe 50+). you will notice the tach drop down about 500 rpm's as the vehicle kicks into overdrive. it does not make your car go faster or slower. you will not have be able to accelerate as fast in overdrive as you will in other gears. if it is an automatic overdrive then as you slow down the overdrive will automatically be taken off.
To make racing more exciting.
I pressed the pedal to move faster in my car.
Make it small light, and stylish.
No.
Either will make your car faster.
because the little toy car doesn't move by its self
no
If it has overdrive use it! it is a "highway gear" it will make no difference what so ever until you get up to speed then it will shift into overdrive and save you gas!
the moon moves faster than a car
If an automatic car is in off overdrive does it save fuel
You would apply force to the accelerator to make the car go faster.