No, we can't. "A fekete autóban" is like an adverb here, you always need van in such cases.
Frustrating!!!!!!!!!! Good answords with typos are wrong!! I am not learning english but hungarian don' t you understand that?
The computer has to check somehow that you made a right translation and didn't just mash random buttons. :)
Usually Duo gives you leeway of one misplaced letter per word. Unless that makes you accidentally spell a different actual word in which case it counts as a wrong translation.