Hold Left / Right (A / D) or drag sideways: steer
Hold Up / Down (W / S) or drag up / down: accelerate / brake
Space or THROW: a package at the nearest car (one behind you has to be a lot nearer than one ahead).
On a phone or tablet there are on-screen buttons for all of it (the menu can switch them on or off).
Reach the finish before the clock hits zero to keep the tip. After zero the tip drains
for 10 seconds, and the level is failed.
Hitting anything damages your car, and if your health drops to zero your car is wrecked. Head-on collisions wreck you instantly.
The shoulders are free of traffic, but stay too long and the police lift you off.
Police cars bust you for bumping them, or for shoulder driving
while they are near. Three busts and it's over.