cars, TODO)xp-system, Mac)progression, Mac)upgrades, TODO)upgrades/upgrade-name, TODO)tires, Mac)tires/compound-name, TODO)weather, TODO)boost, TODO)tracks, TODO)tracks/track-name, TODO)championships, TODO)championships/championship-name, TODO)achievements, TODO)unlockables, TODO)guides/upgrade-selection, TODO)guides/tire-strategy, TODO)guides/achievements, TODO)