A car dealer ship in Massachusetts had this Flinstone car on their rotating car display. The taxi in the foreground is a replica of a taxi from the 70's show "Taxi." Less likely to be recognized by the general users of this website though.
Ray Sumser started this ambitious project to sketch as many cartoon, comic book, video game, and anime characters into a single image. He's already up to 2,500 in the full image, but if you kickstart his page you could potentially add even more! Check out a full zoomable version of the piece right here.