If you have electronic doorlocks, you as the driver may just unlock the driver's side door while all the other doors remain locked. So if you are pushed over to the passenger's side of the car, you just can't scoot over and get out; the passenger's door is still locked, and only the driver can unlock it via a child-safety switch on the driver's door. At least, this is the way it has worked on my last few cars, GM and foreign.
Why on earth would car companies assume the person driving gets to make the call if passengers can leave... It's control freak creepy... on steroids.