1. How to remove scratches from the car body.
2. what type of paint to use to disgiuse any scratches
3. how to clean the parts inside the hood without using a lots of water.
4. It will be great if someone can tell what's the relation between the speed of a CAR and the RPM dsiplayed on the dashboard. What is the ideal RPM and how should it chnage when the car is accelerated / de-accelerated.