Racing truck is a fun racing game that allows you to buy new cars and upgrade it. For you to be able to purchase upgrades, you need to race against other racers for you to earn money. There are some perks in the game such as nitro ad other form of bonuses. You should at least get a 3rd place in order for you to go to the next level. The higher the level, the higher the prizes.
As Always, Good Luck and Have Fun.