Well Mr Musk, on the "European mind cannot comprehend this." Relay,

 

It's a difficult thing.

 

Not all roads are compatible with it.

 

 

Hence why, all four modes are important. Not just the 3.

 

 

If you've got, go-kart mode, that provides security in

low speed, discrete areas. Parking spots for instance.

 

Cycle mode obviously would be for narrower roads.

 

4 wheel drive mode could be the main. Which is probably

good for North American roads as they are more open.

 

But it can meet the standards really...

 

 

Flight mode... I think this depends on the software

(invisible road in the air) that is created as route.

 

Until that is complete, take off and parking as well.

 

Which largely will be determined by A.I.

 

One can't expect anyone to 'drive' it. Nor is it safe to do so.