We've already talked about how mullets can help you go faster on your bike, because they are the most aerodynamic of all hairstyles. But sporting a speedmullet all day would be kind of like going to work in cycling gear, i.e. douchey. Luckily, a dude in San Diego (where else?) has invented an artificial mullet that comes with a headband, so you can slip in and out of it to suit whether you happen to be feeling mullet-y.