Posting for a non-member friend who has to leave our group early due to work. He will be looking to catch a ride from the Big Sandy Lake trailhead back to civilization on Aug 21 or maybe Aug 22 after the eclipse. If you are headed back into a town where he could rent a car or, even better, to a major airport, he would happily chip in for gas or car rentals.
Alternatively I'm sure he'd be happy to split costs with any others in a similar situation if he ends up renting a car.
Please PM me if you've got any leads. Much appreciated!