Rocket League has announced a partnership with World Wrestling Entertainment. The deal includes both in-game crossovers and real life sponsorship.
Rocket League announces WWE partnership | PC Gamer
They will be part of Wrestlemania Weekend having the game be playable throughout the event to fans. I would imagine there will be exclusive content that comes out as well for the game. There are rumors of new arenas and games for the game already spreading with WWE inspired matches.
I enjoy the game but I won't be sporting any WWE toppers, decals, paints, or antennas on my car. lol