sunhuntin looks like a "compatible" engine. its pictured with vintage magnetic pieces, but appears to be a push along. maybe something from a chain store that fits the tracks?
Nigels I saw that one as well Chris, the markings are (I believe) those used on Dutch railways, it is a diesel locomotive and looks like maybe a European Tomy HyperCity release. An interesting model for sure...
chrisjo some more digging led me to this: Swiss Federal Railways Re460 class electric loco. Now to find who makes a model of it...........