 As the cars are futuristic, the cars can sustain a great speed even without gas, making it possible to win races without recharging.But if the player hits a tree or another object that makes the car lose too much speed, the car then will run at a very low speed, almost not moving.The only way to make the car gain speed again is by running over a red strip, using the attractor on another car, being hit by a fast car or using a boost of level 4 or higher.