This particular tumbler isn’t the Dark Knight’s latest set of wheels, it’s the work of Vimal “vlmn8r” Patel and Peter “Mahj” Kreuger. The “Bugroll” zooms along and then performs an acrobatic front flip. Mahj has a history of building cars that move in unusual ways and we featured his “Cadmium” lowrider earlier this year. Once you’ve watched the YouTube video below, click on this link to Mahj’s Flickr Photostream to see the details of how the car works.