Is it time to buy platinum now?

Platinum has usually been more expensive than gold historically. Lately, the arbitrage between the two metals has been exploding since gold moved up in 2019 (see chart below). Investors who want to bet on this arbitrage opportunity might want to get into the platinum market now. Palladium has doubled in price and manufacturers will start substituting palladium with platinum in petrol cars, boosting platinum demand. Additionally, fuel cell cars use platinum and I see this area growing ten years from now.