I have always stressed this with my daughters. It's better to be left bleeding and dying in a public parking lot rather than be abducted to be raped and/or tortured and left bleeding and dying in a remote location. First, if it's your car that you are being forced into, toss your keys as far away from the car as you can and then scream, run, kick and claw. Fight with every ounce of strength you can muster.
Not too many victims walk away from #2.