Hi
StevieJ, when I ordered my Cactus last year I managed to follow the car on it's journey from Vigo to Sheerness. It takes a bit of searching to do so, but what I did was when I received the email from Citroen saying that my car had left the factory I used
http://www.marinetraffic.com to track progress and centred it on Vigo port.
I then searched over a couple of days for any car carrier berthing there and then checked its onward destination. If you are in the UK then the ship travels in a basic loop of Vigo - Zeebrugge - Sheerness - Vigo. At that time it was the Baltic Breeze but has obviously been changed as she is currently at sea near Greece.
I actually watched the vessel berth 4 days later in Sheerness courtesy of the
http://www.Fleetmon.com AIS system and then called at the dealership later in the day to tell them that the car had arrived. They seemed surprised that I could know, however on checking the system confirmed that it had just arrived and had been logged into the distribution centre and was awaiting delivery.
Really pleased that I decided on the Cactus and am getting a constant 70mpg+.