Auto enthusiasts probably already know that Honda’s CBR1000RR, also known as the Fireblade, is a 999cc liquid-cooled inline four-cylinder sport bike. This guy decided to buy one of these motorcycle engines, modify it to the tune of 230-horsepower, and then install the thing on a go-kart. The fun doesn’t end there, as you can see by the videos above, it’s pitted against a Suzuki GSX 1300R Hayabusa, 1030-horsepower Audi S4 B5, and a 9ff TR 1300. Unfortunately, this beast is not street legal, and as you probably guessed, should be driven with extreme caution, even on a track. 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 crazy bowling ball launcher.