Yes you can scare up some possible safety applications for this but you have to take it on the whole and balance the safety risks and benefits. They haven’t even answered how rhey are going to make the underbelly fan street legal when we know it shoots a lot of gravel out backwards at high speed. And understanding from MKBHD is that the model with all directional thrusters is only a high end demo which will never actually be sold. The one that might actually get sold only has thrusters in the back. Does that scream “safety” to you or “excessive speed?”