I've just received a selection of up-to-the-minute CAD drawings, showing the state of progress on the Realtrack Models Class 144/143 DMU project. It's looking good! For more info, along with projected delivery dates, liveries and ordering details, go to http://www.realtrackmodels.co.uk/
The coupling between the cars will also transmit power for smoother running.
Twin flywheels, four-wheel drive and a fully modelled interior - what more could you ask for? NEM pockets at the cab ends also allows for easy coupling of multiple units.