Power-ups provide additional boosts while on a level and can be selected before launching a vehicle. While in the assembly view, tap the  “Lightning” button at the screen's bottom left side. 

Super Glue - Makes your vehicle almost indestructible

Turbo Charge - Doubles your Engine Power without Turbo Lag, neat!

Super Magnet - Attracts Star Boxes and Deserts close to the vehicle

Super Mechanic - Automatically builds a ride for one level to get three stars

Night Vision - Reveals secrets in the dark.

Some power-ups are crossed out on certain levels. This means they cannot be used on that level.