I don't follow the economics on this - while you're staying in a stationary "driverless hotel room", you're tying up machinery (the vehicle bit) that represents a lot more capital investment than a static room. How is that supposed to be cheaper?

In Europe it's cheaper[xx] to leave car driving around (indefinitely on a roundabout etc) than to (short-term) park in the cities or at airports.

[xx]

1h city driving = 20km

fuel @ €10/100km

driving = €2

parking = €3-€3.50

EVs would be <€1/h