Well, so far we've gotten Front, Side, Side Curtain, and Knee airbags that I know of, these are all in the vehicle. Get ready for the Airbags on the Outside of the cars. I presume this will protect pedestrians from bad drivers. That’s exactly what Toyoda Gosei (an offshoot of Toyota) has done with these prototypes: they’ve equipped cars with camera and radar sensors to detect pedestrians and (presumably) activate the outer airbags to protect anyone within range of the car. The hood airbag is supposed to cushion your head while the grill airbag cushions your waist, making the fact that you are getting run over a teensy bit more comfy.
What's next.