Last 15 minutes ruined the whole lot, as well as Hammond's unashamed fawning over the guest. I know some things are supposed to be about suspension of disbelief, but this took it WAY too far.
This episode clearly wasn't aimed at a FinalGear type audience so it is no good trying to judge it as such. The first half was more interesting than the end. They had an interesting selection of cars, it would have been interesting to hear more about what they are actually like. The Ford in particular is forgotten to history in the shadow of the Golf GTi.