The Juggernaut
The Juggernaut is a lorry which as been modified to run on rails.
Description[]
It was built to do Ivor's work whilst he was at the circus. However it has loads of problems, one being it broke down a lot, it loses a wheel, overheats at the crossing and is towed in by Bluebell the donkey.
After a week of these problems, Jones the Steam has the idea of tying a chestnut barrel to the back, so they could carry Idris the dragon and have him fly and fetch help when repairs were needed. The Juggernaut later ran away down a hill due to its ineffective brakes, where it fell off the cliff and landed in the lake with an almighty splash. Idris was asleep on the chestnut barrow when the runaway occurred, but Jones the Steam was fortunately able to summon him to safety in time.
It only appeared in the episode 'Juggernaut'. it is unknown what happened to it since whether it was rebuilt or not it remains a mystery.