Vehicle suffered a catastrophic, uncommanded electronic and mechanical system failure within 30 days of purchase, resulting in a severe crash.Prior to the incident, the vehicle exhibited a violent, unexpected jerking motion while accelerating up a highway on-ramp, though control was briefly regained. A few days later at the end of May, while driving in the rain, the electronic systems completely failed with zero dashboard warning lights or error messages appearing.The vehicle completely overrode driver input, veering uncontrollably from lane to lane on its own. Simultaneously, a total loss of braking power occurred; pressing the brake pedal had no effect on reducing the vehicle's speed. To stop the runaway vehicle and prevent hitting other drivers, I was forced to intentionally steer the SUV into a physical wall. The impact deployed components, caused orange engine coolant to leak, and forced the electronic precision shifter into Neutral on its own before the vehicle lost all electrical power. The steering wheel airbag deployed during this initial impact.Approximately 5 minutes later, while the vehicle was disabled on the road and after I had safely exited, a secondary vehicle struck my stationary car, which caused the majority of the remaining airbags to deploy.Detroit Police responded to the scene and filed an official crash report noting that I 'lost control' and struck the wall, but the responding officer failed to document the mechanical/electronic brake and steering fai