Finally learned what the J.A.P. racecar is! J A Prestons blimp engined cycle car

above photo from http://rafa4fun.blogspot.com.br

Above images from http://www.jalopyjournal.com/forum/showthread.php?t=226791&showall=1

Above images from http://gasballoon.com/V8JAP.htm
Air cooled V8 with exposed valvetrain and "total loss" oiling.
Full gallery at http://tomorrowday.blogspot.com/2010/01/ja-preston-cyclecar.html

even larger gallery at http://clubroadster.net/vb_forum/showpost.php?p=651596&postcount=8684