It’s a Dune Buggy ATV built for Wankel Power by Justin L. Dantzler, Clark Valentine, and John A. Vernon at Santa Monica beach in 1970.
It is a scale model 1, nothing about its engine. It was named The Skink after the little prairie lizard, which could have indicated the future destiny of this dune buggy at six wheels. The wheelbase is 76 inches, and it can be configured in two, four, or six-wheel drive. The pilot compartment is fully closed.
Sources: ArtCenterStories (discovered on Tumblr) published December 2019, sixmania.com