[eveningcoffee]

How long does it take for the car to arrive or how long does it take to schedule it?

I think these should be also included in the comparison.

[yoz-y]

This time is often recouped by not having to get out of the garage and find place to park. (of course parking on or close to the street at home and having a designated place at work mitigates that)

[viraptor]

It depends how much money you have to spend. From public bus to private limo idling outside.