YOU SAID:
if i don't stop, he's going to crash right into my car!
INTO JAPANESE
もし私が止まらなければ、彼は私の車に衝突するでしょう！
BACK INTO ENGLISH
If I do not stop, he will collide with my car!
INTO JAPANESE
私が止まらなければ、彼は私の車に衝突するでしょう！
BACK INTO ENGLISH
If I can not stop, he will collide with my car!
INTO JAPANESE
私が止まらなければ、彼は私の車と衝突するでしょう！
BACK INTO ENGLISH
If I can not stop, he will collide with my car!
That didn't even make that much sense in English.
