If you do a little work, you could use that cable because it does have the right wiring. Just cut the 6-50 receptacle off and replace it with a 14-50.I know, Camco is inefficient from a weight and stiffness/performance point of view. If we could get a 6-50 adapter from Tesla we could use a cable like this instead:
Coleman Cable 1917 8/3 STW 6-50 Welder Extension Cord, Blue, 25-Foot - Welding Extension Cord - Amazon.com