Kick out* the door, wavin the 44

In order to comply with federal standards that mandate that a door must be operational in the event of a rollover crash, Mercedes built explosive charges into the hinge pins so that the doors could be blown off in the event of a rollover (leaving the gull-wing doors nonfunctional). Although in the video shown here the explosives were triggered by an outside switch, in the event of a real-wold crash, yanking on the door handles would trigger the explosives once the SLS AMG was upside-down for a pre-determined amount of time.

Fast forward to about 1:45 for the crashes and 2:35 for the exploding doors.