YOU SAID:

Wassup he'll crash the car if you do not do something

INTO JAPANESE

ワサップ君が何もしなければ彼は車をぶつけてしまうだろう

BACK INTO ENGLISH

If Wasap does nothing, he will hit the car

INTO JAPANESE

ワサップが何もしなければ車にぶつけられる

BACK INTO ENGLISH

If Wasap does nothing, he will hit the car