https://www.gamespot.com/articles/battle-royale-game-h1z1-includes-cars-only-mode-wi/1100-6457057/

H1Z1 has been in early access on Steam since 2015, but the game officially releases with version 1.0 today, February 28. Originally, H1Z1 was a survival game with a separate battle royale mode, but was eventually split the two games in 2016 between Just Survive (survival) and King of the Kill (battle royale). However, battle royale spawned a huge following and the mode was rebranded as just H1Z1, which is now out of early access.

One of the more notable features is the all-new Auto Royale mode; a twist on traditional battle royale that sticks a team of four players into a vehicle against up to 29 other teams (limit of 120 players total). Players cannot leave the vehicle and must take down enemy teams by shooting out of the car while one person drives. The result is a hectic car combat game in the normal H1Z1 map, but with power-ups, weapon pick-ups, and high-flying ramps scattered across the map. Think of it as Twisted Metal meets team-based battle royale.