Two Tesla vehicles at a Supercharger station.
A look at how a Supercharger station looks when two Teslas are charging next to each other.
  • Tesla opened 15,000 Superchargers to non-Tesla electric cars on Thursday.
  • The carmaker shared a video that showed a Ford Mustang Mach-E taking up two charging spots.
  • The issue highlights concerns from Tesla owners about EV charging etiquette.

Tesla opened more of its Superchargers to non-Tesla electric cars on Thursday, but it appears to have overlooked a major design flaw.