If population density is not high than it will not be cost efficient for the normal people.im surprised how many people here think that rich people who can afford to fly over a mountain regularly is a good thing.

Perhaps in 20-50 years when we solved climate change.

Those companies are not trying to just create a cheap and easy to use carplane they want to become rich which needs business viability.

And I don't mind if they solve some niche problems. I mind that they want to fly over my head every 10 minutes.

"rich people who can afford to fly over a mountain regularly"

Look at the rural countryside in places like Norway. I am not talking about rich people primarily, but semi-isolated communities whose older citizens might need specialized healthcare etc.

Also, this was originally a discussion about electric planes, so their effect on climate change is probably neutral-ish.

These kinds of places are also generally suitable for hydropower and geothermal energy which gives considerable amounts of cheap electricity.