I've recently made a start on a Liquid Oxygen Truck from the 1970's TV series, Captain Scarlet.

Although the 3d model isn't going to fully detailed it will be made to accurate overall dimensions so that drawings can be made for making a real studio scale model.

The real thing makes use of the 1960's Johnny Express cab and dump truck body parts. Old Johnny Express advert at YouTube: http://www.youtube.com/watch?v=eEvOhnDdy64