OBD 2 is a small piece of tech you can hook to your car. It will pair with your phone and simulate the sounds of a supercar while you drive your normal daily car. You can not only mimic a supercar but also muscle cars, 1800cc V-Twin bikes and even a chainsaw, if you're interested. This OBD 2 adapter can also be used as a diagnostic tool for your car which could come-in handy from time to time.