He's not the one who does that. Brand approval is through the Marketing dept. Adding to the Service Center infrastructure would either be through Jon McNeill (Tesla Motors President Global Sales & Service), probably with a dash of approval from Diarmuid O'Connell (VP Business Dev)
I'm not trying to be a wet blanket here. I'm trying to give you the best possible advice. Elon is stretched between Tesla, Gigafactory, SpaceX, Solar City merger, and probably several things we're currently unaware of. He's got teams in place for a reason.