And way higher speeds, an extra dimension, the inability to stop in an emergency, the much greater complexity of aircraft, the higher workload . . .
It is worthwhile to study why aviation is so much safer than driving. It's partly due to automation and training, but a large part of it is how aircraft communicate with each other. That's something that is missing in all existing self driving systems.
Well, I gave up my wings around the time my 2nd kiddo was born, figured I needed a less stupidly expensive hobby, like Idunno, tossing diamonds into Piranha to see em dissolve....
With that said, why is air travel so much safer?
Order of magnitude my friend, look up the total number of planes that are air cert'd (something to the order of 200k) Look at how many cars are on the road in oh, say NorCal (ok, bugger, can't get that specific) California. Just north of 14m.
Average time spent training to get an air license 15 hours to first Solo, then 1500 hours before you get your first wings.
Average time for a California Drivers license...20 min.
Now notice, I skipped ground school and any training for the drivers test, just to make it about equitable and to keep my brain from melting.
So, once you look at them numbers, do ya still feel like you need to really cognate much on why cars go crashy crash so often?
If you are still concerned, keep in mind, those plane numbers.. are total for the US, and the cars.. yep, just one state. (a populous one, but just one).
Also a pilot has on average like 3 towers in radio range (been a while and that is from the hip, not looked up) full of people whose entire job it is to keep you from bumping into something else in the big blue empty. My first like 10 flights I think I only saw planes when on approach or taking off.
Also, you have to go through a detailed set of processes every time you fly, and there are always eyes on you. Despite all of this people manage to lawn dart every year.
The question is not how it is safer, The real question is how do we have so few accidents here on terra firma?