Layout of the later CI Highwayman (as well as CI Autohome and CI Wanderer):
The Autohome had what the Highwayman never got: The bed on top of the cab. A great opportunity missed on the Highwayman, if you ask me. Maybe not design-wise, but definitely from a practical view point.
1965 Commer (1592ccm) series IIa Bluebird Highwayman