Not sure if you remember the video, but there was an example of unintentional airbag deployment on a Cadillac CTS-V in the middle of an autocross run.
Was it the G forces or something else we could never find out because e the video was short and there was not too much info about it, but the fact was that the CTS-V did not hit anything and near the end of the round the side air curtain just popped on its own.
The next example is has at least been documented with a proper camera and it includes the YouTuber, GuitamageddonZL1, popping his side air bag curtains at an amazing speed of 140MPH without hitting a thing.
How could this happen? Is it possible that the extremely loud exhaust caused so much vibration to set them off? Well play the video and let him explain why did they pop.