Using some of the bits from an early 80's Highway Maintenance Lego model I had a go at making my own. Trying to get a nice smooth front and round rear lights. I may change the back slightly by adding a raised brick to prevent all the tools falling out under intense acceleration. The only other annoyance with this model is that the windscreen is so old, it doesn't indent inside and therefore I couldn't add a steering wheel. I don't have any other windscreens left now, so until I do it'll have to stay.