I had just pulled into a parking space and was positioning the vehicle to park. I was about to put the vehicle into Park when the vehicle suddenly jolted/accelerated forward unexpectedly. The vehicle went forward over/into the curb and struck the wall. The forward acceleration was unexpected and was not something I intended the vehicle to do. Because this is a new vehicle, I am very concerned that there is a vehicle, software, propulsion, braking, or electronic-control issue. I will be requesting that the vehicle and all available electronic data related to the incident be preserved and that Cadillac/GM conduct a technical investigation before any repair, software update, reprogramming, reset, or deletion of diagnostic information is performed. Even after the recommended repairs, I am very concerned about driving this car with my children in it if they can't tell me why it jumped forward.