I like "Scoot Car"
I agonized over the size and actually made it bigger than first designed. I can honestly say though there would be room for a driver and a gunner, not a comfy ride by any means though.
Even things like the back doors were sized to allow human sized crew to slide through.
I had a Foundry Kubelwagon on the desk when I was designing it and it was originally that sort of size, but it just seemed too small so I up scaled it by 45-50% (cant quite remember).
Components would just take up too much time I'm afraid
Sorting orders, packing, invoicing, sorting stock etc... I don't have the time to do it and the others guys in the office are snowed too. Sorry. We're really not doing it to be difficult.