If you’re not keen on petroleum and corn doesn’t quite cut it, you just might be the next Joe driving a methane-fueled car. That’s right; according to one UK-based company, your car can run on, well, your waste. Yep, that kind of waste. The developer that’s created the odorless methane gas from human excrement promises the same vehicle performance you’re used to, and to prove it, they’ve created the Bio-Bug, a Volkswagen Beetle retrofitted to run on the green (in theory, not color) fuel.

Kick-started by a gasoline engine, the Bug shifts to methane as soon as the powertrain reaches a certain temperature. From there, it runs on the green gas until it’s depleted, and then conveniently switches back over to gasoline, ensuring that the driver isn’t stranded in the middle of nowhere. Crap.

Apparently, roughly 11,500 cars in Sweden are already running on biomethane. The Bio-Bug, which was debuted last week in England, is just one example of what sewer sludge conversion can achieve. For years, companies like GENeco have been powering plants and routing energy back to the grid. So that leaves only one question: Are you committed enough to drive a people-powered car?