Or bad-guys in Mini Coopers can outrun police driving much faster Alfa Romeo Giulia 1600s.In TV world good guys in Fiat Pandas or Transit vans can easily catch (or escape from) bad guys in Ferrari's!
As for Holden, its fate was sealed when Opel was sold to PSA Peugeot-Citroën. The Holden brand wasn't included in that sale, but Holden relied on products shared with Opel, which PSA immediately moved onto its own designs, leaving Holden without a way to share costs on model development. For PSA, this was win-win: it operates in Australia, so hobbling a competitor there was a nice bonus to add to the economies of scale it gained in Europe as part of the deal.