 Some users criticised the use of hinged doors, feeling that sliding doors would be of more use for quick exits or in confined places, but others were quick to point out the drawbacks of this type of door.With a plain panel sided van sliding doors are OK, but the 400E was designed to have access to the body via a side door in addition to the double rear doors.It was also produced as a chassis/cab for pickup or other style of special bodywork, so precluding the use of sliding doors, and anyone who has had experience of them knows they are a mixed blessing when one comes to repair them.