I recently called a one of the most ridiculous ways to travel the world. I now have to take that back because this also exists on Earth: the 2008 Ford F-750 World Cruiser. It was built by one of the founders of the company that moved the Space Shuttle Endeavour to its new home. He spent $6 million making it a reality.

This wonderful creation was recently AutoEvolution and it pops up from time on the internet. The Ford F-750 World Cruiser is the brainchild of Peter Dunkel: Co-founder of in Alameda, California. The company moves everything from CNC machines and fighter jets to yep, getting from LAX to the California Space Center. This motor home was one in a long line of builds for Dunkel, and it has the distinction of surpassing the original pricy budget of $2 million to reach $6 million.

According to a 2013 Mecum , Dunkel drew on his experience to build the “mother of all multipurpose vehicles” and we’re going to get back to that in a second.

He started with a 2008 . You’ve likely seen these as dump trucks, tow trucks or day cabs. These are trucks with a GVWR of up to 37,000 pounds. For example, the largest U-Haul rentals are Ford F-650s capped out to right at the 26,000-pound limit for a standard driver’s license.

So it’ll probably confuse you to hear that Dunkel made it even bigger.

The F-750 already measures in at 8 feet wide fender to fender. Dunkel then added 22 inches in width to the entire truck. This was done to up the truck’s usable space so that a vehicle can be parked in the back.

It also adds a bit to the interior volume.

Being nearly 10 feet wide is fine if you never leave the highway, but I can’t imagine this being anything less than a nightmare to drive on narrow backroads.

If you’ve ever driven one of those aforementioned U-Hauls, you know that one of these doesn’t exactly have a comfortable ride. Dunkel combatted this by putting the cab on its own chassis with an air ride system and bolted to the truck’s frame.

Inside, you get the typical luxury RV fare. You have a living area, sleeping area, kitchen and bathroom. There’s nothing too amazing going on here and it actually has fewer amenities than the typical rigs I write about. But you do get to see how widening it changed up the interior.

There are no solar panels and not even a mention of what the liquid tank holding capacities are. Dunkel built this in hopes of avoiding the . It has an instant water heater in place of the typical propane hot water heater and he invested $20,000 into wiring components alone.

Moving the mammoth RV is a Caterpillar C7 offering up 300 HP and 1,200 lb-ft torque going into an Allison six-speed automatic.

The Mecum ad says that the World Cruiser is good for a 70 mph cruise. These will get about 10 mpg in stock form. If you could match that you’ll be looking at 600 miles out of the onboard dual diesel tanks.

How did this exceed its budget three times over? Dunkel says that he found “a lot more avenues to make and create something better. Let’s just say the art piece got larger and we had to throw the budget out the window because we were going somewhere no one had ever tried to go.” And when all was said and done, he spent $6 million on it.

Now back to that “mother of all multipurpose vehicles” thing.

The Mecum ad states that the World Cruiser outperforms anything like it. I’m not sure if that’s true. It’s too wide and too long to do anything off-road, too wide to actually live up to its name and far more expensive than more practical rigs.

At any rate, Mecum thought it was worth . Someone tried throwing $500,000 at it and it didn’t sell. I’ve tried seeing where the truck went after that and I haven’t found anything. Hopefully it’s still out there being someone’s bizarre super super-size pickup.