2012 mercedes s550. consumer states vehicle slid backwards in parking lot *tgw the consumer stated the safety issue was regarding the vehicle being put in the neutral position after turning off the engine. the consumer stated three weeks ago, he had the misfortune of parking his vehicle in a parking lot. without opening the door, he turned off the engine and when he removed his foot from the brake, the vehicle slid backwards and hit another vehicle. both vehicles were damaged. the consumer stated the minute the engine is turned off, the vehicle should be put in the electronic parking position, rather than neutral.*jb