Racing for All: My Car Can Be Modified and Upgraded Indefinitely

As a racing lover, Leon traveled to a world of racing and faced many difficult tests.
If he failed the exam, he would be expelled from school and lose his identity as a racing driver.
At this time, the divine-level refit system was activated. It could not only give the best refitting plan for racing but also obtain all kinds of rare refitting materials!
"Leon, who modified your car? It's so amazing. It's not only in perfect condition but also tailor-made for you!"
"Leon, are these modified materials made of alien technology? How can they improve the performance of your car so much?"
Ding! Congratulations on winning the championship in the world-class junior competition and you will get an A-level material King Engine!
Ding! Congratulations on defeating all the carriages in the international competition team league. You will be rewarded with an S-level material Turbine!
Ding! Congratulations on winning first place in the world ranking competition and awarding an S-level racing car the Heart of the Emperor!
Leon: The new race is about to begin again. Welcome to race with me!
Other racers: Please don't go to the race. Let us win the first prize!