If the game freezes, just click inside it (games can get unresponsive if you click elsewhere on the page).
Be a road bandit and enjoy your time stealing from trucks in movement. What you have to do is place your car strategically behind your target truck and stay there the required time. You will see a timer that shows you exactly for how long. Be careful not to crash and try to finish each of the eight levels before the time runs out. You can pick up some power ups that will help you to keep your health up, that will protect you or that will give you extra speed. Have a great time!