https://www.pcgamer.com/rocket-league-will-get-a-new-rocket-pass-with-challenges-next-week/

Rocket League's next Rocket Pass launches on April 17, and like the past two it allows players to unlock cosmetics and loot box keys by earning Rocket Pass tiers.

These passes are a problem for me. The premium upgrade costs 10 Keys, or $10, and in theory that should cap my spending for a few months. Oh, but late on a Saturday night, while waiting for a teammate to get back from a fridge run, of course I'm going to buy a few more keys to peek inside all the crates cluttering my inventory. I can't help that I want more dumb wheels.