The top car was, as far as I know, never built. Although it looks quite convincing it is just a re-touched picture of the Getabout. Only 5 Gills were built in total, I'm not sure how many were Getabouts and how many were Saloons but I wouldn't be surprised if the Saloon was unique.
Anyone got one hiding in their garage/barn/shed? Can I have it please?!