Abstract: A self-propelled shopping cart, having a trailer accommodation for transporting a passenger behind the cart, and further comprising a brake feature wherein a tilting trailer is used for automatic drive and brake control. An operator can tilt the trailer to the rear to apply a brake means or forward to engage a drive means. A basket of the cart can be removed and replaced by a seat and back rest through the use of a quick release cam locking device and the trailer can be placed in an upright, stowed position so that the cart may be used in the conventional manual push mode.