We were absolutely shocked to learn that this vehicle is the only GM vehicle (including all other Buick models) that includes rear seat seatbelts that do not "lock" unless or until it becomes necessary. Subsequently, small children have the ability to "hang" and "dangle" from the seatbelts. Should the seatbelts reliably "lock" when needed (not proven), children are at risk for severe injury if they are not sitting upright or if the belt literally "snaps" them backwards. Utterly ridiculous and absolutely unsafe for children. We returned our vehicle within days of taking delivery. All research indicates that even the slightest slack in the belt increases substantially the risk of head/neck injury
Any "positive" about this vehicle was negated by the complete lack of safety for my children. I cannot believe that Buick/GM would take this risk and it is inconceivable why this feature would only be in the Rendezvous!
Consider safety as the priority above all else, including price. Take the same precautions for the passengers as you do in every other vehicle that you manufacture. Inform consumers that you have opted to use this feature in this model so that your potential customers can make an informed purchase.