Hot Wheels Unleashed has a collection of missions hidden in the game which require specific tasks to be accomplished to unlock the game. This guide will go through them all to help players with the same. 
Hot Wheels Unleashed Secret Missions – All Secrets:
- Unsolved Mystery: Finish the Amazing Drivers event race with a Motosaurus car.
- Hidden From View: Finish the Jurassic Predator Boss Race
- Hidden To Most: Finish the Snow Pilot Boss Race
- Covert: Finish all four previous boss races.
- Can You Keep A Secret? Finish the fifth and final boss race.
- Secret Unveiled: Finish Reckless Driving event with the Bone Shaker car
- Top Secret: Finish The Best Race event with the Buns of Steel car.
- Surprise! Complete the Quick Race.
- Tell No One: Complete the first race with the Hot Wheels High Bus.
After unlocking the nine secrets, you will open the 442 muscle car or Oldsmobile 442.
Hot Wheels Unleashed Secret Missions – Guide:
Unsolved Mystery Secret Mission:
The Clue Amazing Drivers: with an appearance from Motosaurus
Guide to Unlock your Motosaurus (complete every event up to the west) > Completely Amazing Drivers using the Motosaurus
Hidden From View Secret Mission:
The clue: End the reign of the winged monster’s terror
Guide: Complete all Jurassic Predator boss race
Hidden To Most Secret Mission:
The clue: Take on the one who reigns over the ice
Guide: Complete your Snow Pilot boss race
Covert Secret Mission:
Find the clue: Beat four bosses and take on the ultimate task
The Guide to Complete All Four races of the boss
Can You Keep A Secret? Secret Mission:
The clue: Take on four bosses and take on the ultimate task
Guide: After completing the previous mission secretly, take on the fifth boss.
Secret Unveiled Secret Mission:
Clue: Reckless Driver: with an appearance from Bone Shaker
Guide to Unlock Bone Shaker (boss race referred to as Ghost Seekers) > Complete Reckless Driving using the Bone Shaker
Top Secret Secret Mission:
Clue: The Best featuring a special appearance from Buns of Steel
Guide to get Buns of Steel (end of the neighborhood street) > Complete the Best by using The Buns of Steel
Surprise! Secret Mission:
Clue: The Best Unlocks upon completion of Top Secret event.
Guide: Finish all the Quick Race, the Buns of Steel event
Tell No One Secret Mission:
Clue: The Best. Get up early; it’s late! Today is your first day of school, so you’ll miss the bus!
Guide to unlock the school’s big yellow bus (Tough opponents quick sprint) > Complete the Journey Begins with the large blue and yellow bus.
