Or very slow entry speed. My wife rear ended someone while parked because her foot wasn't fully engaged on the break and it creeped forward until it was touch

Or very slow entry speed. My wife rear ended someone while parked because her foot wasn't fully engaged on the break and it creeped forward until it was touching the car in front. It's a tesla so it started beeping but not until it was too late. No visible damage but that didn't stop the other driver from collecting insurance info and reporting it.