Experimental powered Mirror Dinghy

I was researching a totally unrelated theme (alternative engines) when I came across this. It's too good to ignore. Here is a Mirror with a difference:
(quote from http://www.stirlingengines.org.uk/boats/index.html )
"Bob Sier's two cylinder double acting engine fitted on his a 1973 built Mirror sailing dinghy "

Gernot H.