My son just sent me this video...fun watch. I don't see it posted here, so hopefully this isn't a duplicate thread! Enjoy!
They drove the trucks through the Chunnel? I have driven my car on to the train, and I can't imagine that one can drive a truck through there. Maybe they put the trucks on Ferries.
Nobody drives through except a few security, maintenance and customs vehicles in the central tunnel. The trucks go on the trains as you did, as we all do. When I was racing Formula Renault in the UK in 1989 my main sponsor was Techpro who built the initial carriages that carried cars and trucks through the Chunnel.