I for one would be fantastically happy to look as goofy as I possibly could if someone would let me take one of those around the track, lol.
Seriously though - I've see photo of a 1-1/2 inch scale 4-6-6-4 and as I understand it someone has actually made a 4-8-8-4 in the same scale.
Gadzooks (to say the least).
Ben