They’ll make up the lack of area with velocity, making for 250 mph rocks and sand coming out from under it.
Its why the picture I posted above of it landing on a beach is so clueless.
(talking to her husband on his beach towel) "Oh, honey look...there's one of those flying cars, and...it's coming this way! Wait...NO! DON'T LAND HERE! Aggh...ack...agghhhha....ackkkk...AIEEEEEEEEEEE!"