Airports will allow vehicles right into the terminals, maybe even onto the tarmac, as increased controls and security become possible. Terminal design may change dramatically as transportation to and from becomes normalized and integrated
I doubt that vehicles will be allowed onto the tarmac. A plane costs at least 51 million dollars. A car costs a few thousand? Even if controls would 100% prevent any crashes or accidents, you can’t eliminate the threat of a rouge actor driving a manual car.