Rolls Royce is the company name I was after. I think when Go-Tract started it was a subsidiary of RR UK, then RR Canada. These were sold as Rolls Royce Go-Tracts in Australia during 1968-69, so I thought that was their proper name. The year for this vehicle is 1968, which close enough to your answer. This particular machine had a 5 letter model name, and was the size down from the 220. If you can tell me that, that would be good. It's mentioned a couple of places on the internet, but is hard to find. I'll give you a couple of days, if you can't find it, I'll call it solved.
So far, 1968 Rolls Royce Go-Tract xxxxx xxx