When you want to go faster, you press this.
You see the road through it.
You turn these on when it is dark so you can see the road.
Whenever you want to shift up or down, you press this down.
This cools down your engine.
This provides your battery with the electricity it needs.
If the road is bumpy, these help to dampen the bumps.
If you want to turn left or right, you put these on.
You use this when you start a cold engine.
This lubricates your engine.