I would take a defensive stance right in front of the car and give the driver "the look", as the car approached I would run towards it, throw my purse up in the air, step onto the bumper and execute a twisting front flip with a turn... at the same time i would pull my .45 Storm and shoot through the windshield and top of the car (hitting the driver of course) I'd safely land behind the car (as it was passing under me as I flipped, duh...) re-holster my gun, catch my purse as it came back down, flip my hair out of my face and say something catchy then turn and walk away... (as the car blows up behind me...) LOL
*cue the music...
Well, either that or just move out of the way, I mean it really depends how far the car is... run inside a building or store...something like that.. LOL