i have got an old pram chassis from ebay (99p+postage) and got my old M&P pram system out of the loft. the 2 pieces fit together *(phew, one worry out of the way), the whole huge thing fits in the car (phew again). but tomorrow is the day we test out the whole thing, to see if i can safely strap the spare VAD onto the 'buggyboard' (part of the design feature) without the whole thing falling off or tipping the pram. i figure its meant to hold a toddler so it shoud be able to carry a 20lb VAD safely.