 We have a fully loaded GLS 450. My wife had a unexpected acceleration and the car drove through the garage wall into the house causing about $25,000 to both the vehicle and the house. She swears her foot was on the brake. MB says the "black box" disputes that assertion. The car clearly malfunctioned. The airbags did not deploy. The highly touted and heavily advertised accident avoidance system did not stop the car. MB customer support has been difficult to work with and actually seems to be trying to avoid us.