Over the years, the Seven has come to be a known quantity among auto enthusiasts. What isn't as well known is the origin of the Seven and the cars that came before it. As XCAR points out, "What happened to [the Seven's] earlier ancestors? What happened to the Lotus numbered one through six?" The answer probably isn't what you'd expect.
Scroll down for a great look at unique motorsport that inspired Colin Chapman's earliest efforts in the latest video from XCAR.