I have found an article (in the Morgan Ear Dec/Jan 1994 ) which confirms my belief that a 3w Morgan flew. I had asked this forum earlier.
Ernest (cousin of AC Maskell) designed a kit to modify his car and flew it in the Northern Territory, Australia. A cruise speed of 55 knots was claimed.
I don't know how to send you all a PDF of the entire article.
It is fantastic.