[bmelton]

'But the flaw is this: "All you need to provide is a driveway or parking space where the mechanic can work"'

But you can do quite a lot of things with just some space and some tools. Oil changes, filter changes, brake jobs, battery changes, rotate tires, etc. And, if the vehicle called is capable of a tow, this might presumably supplant both AAA and Jiffy Lube type services.

Expanding on that, as someone who has been the proverbial "busy professional", I would have happily paid a premium to have someone come and do my oil changes while my car was parked at work to prevent having to take the half hour out of my day for routine maintenance.