The 2017 Tesla Supercharger map looks like the Benson Supercharger may not come to fruision. The 'dot' seems now moved a bit closer to Willcox AZ. Another 'dot' near Deming NM and Las Cruces NM (Hilton Garden), then onto El Paso TX etc.
Future traveling along what is now a supercharging desert appears to be from Casa Grande AZ, Willcox AZ, Deming NM, Las Cruces NM,(north to Truth or Consequences) (east to) El Paso TX, Van Horn,TX, >> Fort Stockton TX/Midland TX >>>, to Ozona TX/Sweetwater TX onward. I guess we will have to look more closely at Willcox AZ/Deming NM.