Just learned (July 1st 2011) from Johnny's blog
http://steampunkvehicles.tumblr.com/ this is the J. A. Preston “Cyclecar”.
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Lord K (thanks mate!) of the terrific website Dieselpunk found the above and shares it with us
http://dieselpunk.livejournal.com/ the very breif photo descriotion just said 1908-19 GN/JAP grand prix vintage racing at Cadwell Park
A couple photos are by Dusza Beben