2004 Cadillac XLR Owner's Manual - Page 131

Highway Exit Ramps {CAUTION: ACC may lose track of the vehicle ahead and accelerate up to your set speed while entering or on highway exit ramps. You could be startled by this acceleration and even lose control of the vehicle. So, disengage ACC before entering a highway exit ramp. Do not use ACC on exit ramps. ACC may detect a vehicle that is not in your lane and apply the brakes. ACC may occasionally provide a driver alert and/or braking that you consider unnecessary. ACC could respond to signs, guardrails and other stationary objects when entering or exiting a curve. This is normal operation. Your vehicle does not need service. 3-21