your mission is to reduce the fumes on the highway completely by upgrading your car to be more fuel efficient when game starts click on car to go again click the "go again" button press space to upgrade to car 3 from car 2 and press a to upgrade from car 1 to car 3 press b to upgrade from car 3 to car 4 and press c to upgrade from car 1 to car 4
made by dragon_Lewis and scrubbybubbles6320
