cab made from 4 pieces of styrene;
3 sides and a seat:
It was such a great runner, that #2 was purchased:
This cab only has 3 pieces of styrene; a front end, back end and a seat joining the two together.
The advantage of this, is that you can have the driver facing either side (driver held on by blue tack). So the loco can be positioned in either direction, and driver turned around so he still faces the public.