Verified answer

well... i agree with the two above to avoid the flooding problem but i believe if you could have it flat, that would be best. cause i've heard of many freak accidents with inclined driveways or cars parked in that sort of way.... brakes can get faulty at times...

I say incline if you can't have flat. If you have to drive down to your house you might have water drainage problems with the foundation, basement, etc.

Down from your house, to run water away from it.

definitely up, i agree with the above about the water situation