The Ro-bell is a Bachmann product that I bought a while back thinking it maybe of use as a chassis for a Drewery car in 4mm. It's sold as OO, but is actually HO. Powered by a tiny Bachmann N gauge motor it's just capable of dragging the three vans along. It may get a run on the layout once in a while even though I'm trying to avoid the engineering stock if possible. For photos of the real thing click the link to Nigel's scandiwegian page on the right.
Lastly, a welcome to the Brazilian and Russian readers of this page. I'll stop there before it turns into Two-way Family Favourites.