The Pendolino body is plastic and it did, originally, have a motorised plastic chassis, but there was very little clearance underneath and so, it would not run on the Tomy track.
My grandson has a Brio / Bigjigs, wooden railway, so I gave it a run out on his layout and discovered the motor was very low geared so it was a very slow runner.
Later that day, I spent a few hours (back at my home) trying different motorised, Plarail chassis, inside the Pendolino body until I found one that was a good match.
Most of the UK models intended for wooden railways have plastic wheels, but other than that, are completely made from wood, with windows being painted on them, but now and again, fully plastic models are produced and I was lucky to spot the Pendolino at the time it was available, as they are few and far between on ebay and shops sold out of Pendolino's, some time ago