I ended up randomly riding with Kevin on the trip from the ferry at CA to the airport on Sunday. I asked if he was the "famous Kevin" on TTOL and he smiled and passed me his card. In discussions with him, it is clear the "extra" benefit he can provide is getting you to your destination if/when things go wrong. Kind of like local trip insurance.
I will use him every time in the future. He indicated the best way to pre-coordinate with him is through text messages.