20” Rivian wheels, look to be made in Mexico rather than China like current offerings. Perhaps these are a prototype for the refreshed R1 or new wheels for R2?
Whether it's for R1 or R2, an employee or employee of supporting business probably helped themselves to it (happens a lot in this biz) not knowing a single one is practically useless. Would make a cool little man cave coffee table if you add a stand and round glass top.