YourMechanic should provide some idea off the bat as to where they are providing service at this time, and perhaps a timeline as to when they expect to expand.

A simple, YourMechanic is currently providing service to the San Francisco Bay Area, or something.

After going through several steps in their chain:

Select Service -> Service Details -> Provide Name, Address, Email, Phone

The Mechanic Bids step failed with

errno: erange "Sorry, we currently do not serve this location right now."