 As a quick side note, while we're on the topic of product placement, it's kind of ironic how the drinks Marty tries to order in this scene... Give me a Tab. Tab? I can't give you a Tab unless you order something. Right, give me a Pepsi Free. If you want a Pepsi, pal, you're gonna pay for it. ...are as foreign to the guy behind the counter as they probably are to modern audiences, as Pepsi Free and Tab no longer exist. Additionally, Pepsi, one of the sponsors of the film, was against Marty mentioning Tab, which was a drink produced by their competitor, Coca-Cola.