This isn't Bill and Ted's Excellent Adventure, but a new company called Tubular Rail hopes to revolutionize rail travel as we know it.

The passenger car becomes the rail. The wheels are in the track columns.

Check out their gallery of concept art to learn more.

I have lots of questions about how this would work and how safe this would be compared to the Metro or Amtrak.

On the site's Q&A section, the basic concept is laid out: "When sliding a pencil off the edge of a desk, given a uniform weight distribution, the pencil - or any beam - could be pushed to almost 50% of its length before tilting would occur." But what happens if people crowd to the front of the train? How would these things hold up in high winds or earthquakes?

To me, it evokes the elevated trains of Gotham City and Disney World's retro-futuristic monorail.

This technology will be featured on the Discovery Channel in October: NextWorld: Future Technology