2023 BMW I7 — FORWARD COLLISION AVOIDANCE: ADAPTIVE CRUISE CONTROL

On 2023 BMW i7 while I was trying to park in a parking stall moving forwards at a very low speed in a shopping center( less than a 1 m/h) . The car suddenly and very aggressively took off and accelerate on me while I was straightening the steering wheel to pull more forwards, heading another parked car in front it, head to head and pushed/ slid the parked car about 20 feet. I have no idea if any button was pushed or activated with my palm while steering to park. No signs or indicator or sensor warned before accident and nothing after accident.