Along the way, new vehicles as well as new race/battle maps and weapons are unlocked. Each Challenge comes with various tasks, such as achieving 'x' Stunt points, collecting 'x' gears, or reaching the finish before the clock hits 00:00. In the Challenge mode, the player has to complete all 18 challenges. In the GBA version, the story mode is simply races mixed with tasks given by the Professor such as destroying other vehicles and collecting items.
The game's missions take place across 5 different locations, with three missions in each world, except for the final world, which only has 2 missions. These tasks vary from destroying a few vehicles, collecting items, racing/battling a boss, and more. In the main Adventure mode, the player has to beat all 14 missions, while completing tasks in each one.
He is confronted with various 'Villains' on his quest, such as Nitro Byrne, Backroads Belcher, Fast Lane Friscatti, Simon 'Slick' Deluca and Rupert Jacoby, all of whom work for Otto Von Diesel (Dr. Peter's son, Max Justice, insists to his dad's Robot 'Gearhead' that he should try to track down whoever stole the cars and attempt to retrieve them all (in the GBA version, however the robot, 'Gearhead' is the playable character). Gameplay: The story begins when The Hot Wheels car business, owned by Dr.
