Once you have boost fuel stored up, you can hold down the A Button to activate your turbo thrusters and zoom past the competition. You can hold up to 20 seconds of Boost at a time. And no, Hydro Thunder fans, there is no Boost jumping this time around. 4 Wheel Thunder is as hard as and in some ways harder than Hydro Thunder. Unlike most racing games where maintaining the lead is the only challenge, in this game the only way to win is by clawing and fighting your way to the top, and even if you do place first or second, it'll probably just be by the skin of your teeth.
Races are almost always down to the wire and intense, even ones with multiple laps.
At times, it may seem like placing first or second on some of these maps is impossible, but once you learn all the shortcuts and hit most of the boost icons, it's just really difficult. Bonus trucks include Milky, seen here Moo-ving a competitor out of the way. 4 Wheel Thunder contains both indoor and outdoor courses, which is significant because the game plays differently once the racing moves indoors. Unlike outdoor courses, shortcuts and secrets are pretty much non-existent. Indoor tracks are probably slightly easier, since the Boost is generally easier to get, you don't have to explore the track for short cuts, and there is less competition to deal with.