What are the Wi-Fi capabilities of Model S vehicles that are currently being built? When did it change? Any specs on the chipset? I have a June 2013 S and it is stuck in the 802.11 b/g 2.4GHz stone age. I asked about upgrading it, but my local service center responded in the negative. I did not get a clear picture, however, of how Wi-Fi has evolved for newer builds, if at all.