How extreme can a motorcycle get?

Every now and then, someone decides to build a totally outrageous machine. I remember the guy in the UK who built a working 48-cylinder motorcycle by grafting 6 V-8 engines into a single power plant. I saw/heard a video clip of the bike actually being started up; it was a mechanical marvel, albeit completely impractical for any real use.

Well, enter German engineer Clemens F. Leonhardt, whose company, Leonhardt Manufacturing, has designed and built an absolute behemoth of a motorcycle, the Gunbus 410. Looking at the first two photos, it doesn't look that big, but scroll down to gain a proper perspective.

Get ready.....

A typical superbike-class sport bike has a 1000cc engine, which translates to 61 cubic inches. This baby is 410 cubic inches, or 6728cc's! The fuel-injected, 45 degree V-Twin engine runs through a 3 speed transmission with reverse and puts out 523 foot pounds of torque. The seat height is a reasonable 31.5 inches but overall length is an insane 136 inches. At 1433 pounds it might be a beast to handle. I'm still waiting to see a road test...