So we might have found Biff Tannen. A guy in Wisconsin was texting and driving a Ford Mustang convertible when BAM... he crashed into a tractor pulling a trailer "full of liquid manure". Yikes, that might actually be worse than Biff's fate in Back to the Future.
In Back to the Future, Part II, Marty McFly watches promotional footage for the Biff Tannen Museum in a dystopian 1985. A rare VHS copy of this ad was recently unearthed, so make like a tree and check it out.