Healey WAEC - More info wanted

Some of you will know that Donald Healey - of Donald Healey Motor Company fame and the man behind the Nash-Healeys, Jensen-Healeys and Austin-Healeys - tried his luck with a Mini based car also. His roadster was in fact based on one of three hand built pre-production Mini prototypes and is now the oldest Mini alive.

However, it wasn't on its own. There was a later prototype - probably dating to 1965 - built to become a possible Sprite successor, which supposedly used a 1275cc Mini Cooper 'S' drivetrain, placed behind the driver and passenger. The car came with a Targe roof into which the hood cleverly could be folded away. It used a combination of Sprite (front) and Mini (rear) suspension with hydrolastic (note different wheels). Handling was said to be 'astounding', though less stable than that of the Sprite. The prototype was named WAEC for 'Wheel At Each Corner' and I have only been able to source one picture of it. Supposedly it never made production because BMC thought 'Sports car owners are too conservative'...

I have no idea if the prototype could survive. Over the years I have asked several Healey enthusiasts and connoisseurs for more information about the car, but no one appears to be able to tell me more than just this. Perhaps a message out here may help..?