"There's a car a couple blocks from here. You are going to go there and you and me are going to take a little ride."
"Why would I do that?"
"Because that tie looks real nice. And I'd hate to mess it up."
(A lingot to whoever gets this reference!)
I've always understood the verb conjugation to determine the pronoun being used. Therefore wouldn't 'van' refer to 'they' even if its ellos/ellas/ustedes? I understand that ustedes CAN refer to y'all as well, but never as a single 'you'.