This comment actually got a laugh out of me. I truly have no idea what would be feasible in a collision like this. Probably packing peanuts? Airbags on the outside of the car that deploy when a pedestrian is detected?
Pedestrian airbags have been designed before, but don't seem to have caught on widely [1].
A more bizarre solution Google patented always stuck with me: A sticky car hood beneath an eggshell coating so that a struck pedestrian would stay on top of the car instead of falling and hitting their head or being run over [2].
There are wearable airbags on the market for motorcycle use. I don't know how effective they are for their intended use or how effective they might be protecting a pedestrian, but it's a technology that exists.
