It looks cool, but that is a horrible handle. You want it to be wood or plastic so it dampens vibrations as much as it can, and smooth so one hand can slide down the handle from near the head to your other hand at the end as you swing. A couple minutes breaking up concrete with that and your hands would be numb, tingly, and probably bloody. Gloves would help, but using this will always suck.

Airbags are not forbidden in aircraft. They just haven’t been considered to offer enough safety benfit for their weight and cost in most cases. That is starting to change though, and airbags integrated into aircraft seatbelts are becoming more common. They can be found in first class in a number of commercial aircraft, and are sold to be retrofitted into private planes.

https://en.m.wikipedia.org/wiki/Airplane_airbags

https://www.amsafe.com/product/airbag-restraint-systems/

There are many reasons I doubt this car will make it into commercial production, but the airbags will be OK.

That would be discrimination, and I imagine the company would fire the employee in that case.

The difference between that scenario and what’s happening is that the employee is also an agent of a union, not delivering mail to Tesla is part of an ongoing strike, and the right of unions to strike is protected. If a union or individual employee decided not to deliver mail based on ideological differences, not as part of a strike, that would not be protected. If the strike ends and they continue to not deliver mail to Tesla, that would also not be protected.