Good luck trying to jam an auto into park- - - - -unless you can lock up the driveshaft at least momentarily so the parking pawl can find a notch to fall into. Otherwise, it just makes a horrendous grinding noise and the driveshaft keeps spinning. Nail what's left of the brakes, select reverse while the rear wheels are locked up, and gas it. That's more likely to make a bigger difference in your forward momentum!
Jerry
