If you're increasingly bored with the engine noise of your car (smart car owners, I'm looking at you), a new app has been released that hopes to partially solve this problem. Available for both iOS and Android at the low cost of $0.99, XLR8 simulates the audio of various sports cars by utilizing your phone's accelerometer to play engine sounds that kind of matches the way you're driving. When you rev your real car, the audio revs up as well. When you slow down and approach a stop light, the audio also matches this as well.
