Back Off! Someone make some Yosemite Sam mudflaps for this ride.

In the genteel arms race to build the biggest baddest bike, Surly has been the stock SuperPower. Between the Pugsley and the Big Dummy, we’re looking at the biggest pedal-powered two-wheelers ever built.

But Traffic Cycle design has built a one-off that actually looks like the bastard offspring of Pug and B.D., and it looks like this:

Apparently, builder Spencer Wright created this for a friend who is riding from Alaska all the way down the “spine” of two continents to Tierra Del Fuego.

Cool ride to be sure, but Dan Buettner made this ride 20 years ago — on a stock ten speed.