: Unlike standard car parts, Prototype parts are unique and can be collected repeatedly after a 24-hour reset to further upgrade your fleet.
: These are collectibles scattered around the open world. Once you collect all the necessary parts for a specific model, you can unlock that vehicle.
In , "pieces" typically refer to the Prototype Car Parts or Shards hidden throughout Sunset City. Collecting these allows you to unlock exclusive "Prototype" cars and high-end upgrades without spending in-game currency. Finding and Using Pieces
: Several pieces are hidden on parking garage roofs that require using ramps to reach.