Is the Porsche 911 a good investment?

The thesis

The 997.2 GT2 RS is the last manual GT2 ever built—500 units globally, fewer than 150 in the US—and the most powerful 997-generation 911 at 612 hp. Recent sales show meteoric appreciation: average now $685k (£519k), with delivery-mileage examples hitting $777k. Its twin-turbo flat-six, manual gearbox, and Nürburgring record pedigree position it as a blue-chip Porsche with strong momentum toward $1M within five years, driven by 'last-of-breed' collector demand and vanishing supply as cars enter long-term holdings.