This is an Americanist called Bobby Tanner, and that miniature blue death star is his V8-powered four-wheel drive buggy.
As this video indicates, the combination of the two results in silly feats of climbery. Not only is he scaling a wall you'd struggle to walk up, he starts off in an actual river. Or a lake. Or possibly a pond. Who knows. Who cares. It's wet and this is bonkers.