Wow.
There are numerous threads telling you how to bring home the gold. Famine even did a complete cover on the event that is extremely helpful. You may have just earned a few points friend.
Seriously, people are sharing cars, sharing info, doing everything they can (short of logging in as you and winning the dang thing for you) to help you and others win this event.
It is not "impossible"; it is a "challenge". Perhaps that's why they call it a challenge.