the standard issue chevrolet express - the vehicle used by the baltimore police department - is smooth on the inside of both cage doors .
chevrolet spokesman michael albano confirmed to daily mail online that the standard issue chevrolet express police transport van has bolts that are built into the door and do n't stick out .
the development raises a number of questions about the official account put out by the force emerged today in a report of its internal investigation into gray 's death .