YOU SAID:

If my car crash here, then i will have to walk there

INTO JAPANESE

私の車がここで墜落したら、そこを歩かなければならない

BACK INTO ENGLISH

If my car crashes here, I have to walk there

INTO JAPANESE

私の車がここで墜落したら、そこに歩かなければならない

BACK INTO ENGLISH

If my car crashes here, I have to walk there