'Out by road and back by train' was the slogan often used to describe the notoriously unreliable Leyland Roadtrain.
I know it's not the most popular truck in the world, but I'm always going to have a soft spot for the Roadtrain as it was the first truck I ever rode in. A friend and I were hitching from Swansea to Paris and a British Steel driver took us from Port Talbot to Newport. I remember him complaining bitterly about the truck that he claimed 'couldn't pull a foreskin back', but I was hooked. A year later I turned 21 and immediately took my HGV test.
This 1985 example, in service with MAT International Transport, was powered by a Rolls Royce designed Eagle six-cylinder engine.