well - at the time no one had pictures - however I believe I stumbled upon them.
Basic Honda

Honda with trailer

Website's French http://inter.action.free.fr/labo-aero/aero-vr/aero-vr.html -
but I believe the point is that the Honda with Kammback had a CD of 0.25 and with trailer it's 0.12 - so more aerodynamic with the trailer than without.
(although it's a bit small for a standy)