Launch control *integrates the brakes and both traction and powertrain control to help ensure smooth, consistent starts across a broad range of driving conditions. Real-time performance info is displayed through Track Apps® on the in-dash LCD screen. Electronic line-lock,* now standard on all models, lets you take your track skills even further. No need to balance one foot on the brake and the other on the gas, or install a mechanical line-lock. This integrated system does the work for you by locking the front brakes and releasing the rear brakes. Those back tires will be spinning and warmed up in no time. *For track use only