After making a right turn, the car accelerated automatically and drove onto the sidewalk. The driver was hitting the brakes and attempting to redirect the vehicle with the steering wheel but both components of the vehicle were locked, causing the vehicle to lose control and crash into several things on the sidewalk (flower pot, parked cars, building pillars). The Tesla is completely dead so we are unable to retrieve any data within the vehicle. The safety of civilians on the street as well has the driver and passenger of the vehicle were at risk due to the lack of control of the vehicle. Two weeks after the accident, Tesla sent out a recall notice in regards to autosteer which can increase risk of collision, but prior to this no notice/warning was in place. The police were involved and at the scene at the time of the event and a police report has been made. No messages were seen on the screen or on the Tesla app in regards to any car mode (autopilot, cruise control, etc.) the vehicle could've been on, nor any warnings about risk of collision due to the recall.