The big problem with autonomous airplanes is they still require airports. I don't have a runway in my backyard, and I can't build one because someone else has a house there. My closest runway is about 20 minutes away, and then once I get to the far airport it is another 20 minutes to get where I'm going. This is why commute by airplane will always be a niche only a few people can do. In turn this means airplanes will never scale to be as cheap as cars are (a new Cesna stationair HD MSRP is over $700k - I submit that if they were building 40 per hour like many SUVs are built the cost would be around $70k)
Even a farmer is unlikely to be willing to give up that much space from their farmer operation. I do know farmers who have their own private runways, but they love flying and so are willing to give up some income to have a runway. They are giving up thousands of dollars in gross income to have that runway.
I happen to have a backyard that is big enough for a helicopter (I think - I never measured but I think I'm at the minimums the FAA requires), but I have an oversized yard. There are a lot more places for a helicopter. Most local parks have enough space, but I think communities would object to regular use. (if used only a couple times a month no problem, but more that and the noise and need to clear everyone else out will make it an objection)
Even a farmer is unlikely to be willing to give up that much space from their farmer operation. I do know farmers who have their own private runways, but they love flying and so are willing to give up some income to have a runway. They are giving up thousands of dollars in gross income to have that runway.
I happen to have a backyard that is big enough for a helicopter (I think - I never measured but I think I'm at the minimums the FAA requires), but I have an oversized yard. There are a lot more places for a helicopter. Most local parks have enough space, but I think communities would object to regular use. (if used only a couple times a month no problem, but more that and the noise and need to clear everyone else out will make it an objection)