Every car with adaptive cruise has similar disclaimer, pointing how unreliable system is recognizing parked vehicles [1]:

Safety Consideration When Using Adaptive Cruise Control

• The system can only brake so much. Your complete attention is always required while driving.

• Adaptive Cruise Control does not steer your vehicle. You must always be in control of vehicle steering.

• The system may not react to parked, stopped or slow-moving vehicles. You should always be ready to take action and apply the brakes.

[1]https://my.gmc.com/how-to-support/driving-performance/drivin...