Vrroom, vrroom

Does anyone know anything about motorcycles with diesel engines? I'd really like to get a classic bike that I can run on biodiesel. Is it do-able?

Here's a good story about a man named Harold Benich. He created a bike from scratch to run on biodiesel. But shouldn't I be able to use an old diesel bike just the same?

From the little research I've done, it looks like Royal Enfield of India used to make a diesel engine bike, but no longer. (Pictured above is their beautiful current Bullet Sixty-5 model). I suppose I could cruise around eBay or Craigslist for an old one.