The German-built Bath2Go is a unique solution for those who want a more complete indoor bathroom without going for a bigger van or cutting into their existing van's floor plan. It's an all-in-one portable bathroom that rides behind the bumper, providing a place to take care of business when it's needed, staying behind in the garage when it's not.

While a cassette toilet tucked below a bench or inside a closet is quite space-efficient, it isn't exactly the most elegant way to do your business (or endure someone else's business). Bath2Go thinks that van owners would be much better off with a dedicated bathroom, not inside the van, but mounted behind it. 

The Bath2Go has some foreseeable issues of its own, but it does indeed look like a more private, user-friendly bathroom-on-the-move. Its interior looks much like the wet baths you might find inside larger motorhomes, albeit contained within in a box riding on the back of the van.