Nickelodeon Kart Racers 3: Slime Speedway

Here’s the big question:
HOW DO YOU GET SO MANY TOKENS?

Easy way is challenge section 2 for April (after getting Squidward) and playing “Keeping Up with The Bigheads”. Go reverse by holding X and collect the 5 tokens, then stop and wait for them to respawn, then crash to end the challenge and get you 10 free tokens.
(still works and I just used it to get Patrick for this achievement)
Then when you have enough, go ahead and buy 5 things (whatever those may be)

You can get this quite quickly if you purchase cheap items like exhausts or decals which are around 20-40 coins