Well it's been a while dear diary but I have info and a rubbish picture. Decided to dip my toe in the water with a beetle, 1000rpm motors, sabertooth, 12v nihm, 2wd pushy thingy all sandwiched in an ally angle and hdpe cocktail. Everything should turn up soon, I'd put up pictures of chassis so far but would be laughed at. Getting it all under a kilo hasn't been easy! Heavy is still a shell, starting again in march in to finish in time for the summer, have sketched up all the bracketry for the wheel chair motors which has been hard given they usually bolt to a frame and not a flat plate. Thanks for reading as ever.