I was driving my 2023 Tesla Model Y on I-680 South on Nov 8 2023. The car was on adaptive cruise control. I was driving within the speed limit. The truck infront of me abruptly stopped as there was another collision in the lane I was on. I applied brakes but the car did not stop on time, and I rear ended the truck. I have received the vehicle data report from Tesla. Attached the report for you reference. I believe the adaptive cruise control did not slow down as it should have and when I manually applied break, the vehicle did not stop.