A link to this was put up on locostbuilders and is currently listed on ebay. I'm not overly sold on the snow plough front end but if made in sections could be made to work on the roadster. http://cgi.ebay.co.uk/ws/eBayISAPI.d...#ht_500wt_1204
Getting in and out would be a challenge reminds me of the dunkervoort.