The Brimstone Quadracycle is basically a cross between a hot rod and motorcycle, but in a quad bike layout. Each one is hand-built to order, and can be configured with plenty of carbon fiber, aluminum, titanium as well as magnesium. The real star is its Dart 427 – 455 cubic inch (7.0 – 7.4 litre) small block V8 that produces up to 750-horsepower, with power sent to the rear wheels through a four-speed automatic transmission and an aluminium 8.8 Ford IRS differential. All of this equates to a blistering 0-60mph run in just 2.8-seconds, and 0-120 mph from a standing start in just 6-seconds. Click here to view the first image in today’s viral picture gallery. Continue reading for the five most popular viral videos today, including one of a motorcyclist who stops traffic to save a kitten.