How do you unlock crashes car in crash tag team racing?

Answer 1

storymode:

when you have unlocked all the other characters first cars and start unlocking their second car u will able to talk to the two birds close to the turtle merry-go-round and the will give you a mission and when you complete it you will get crashes car just like you would with any other character :)

multiplayer:

when playing in multiplayer mode you will get cash from winning races and with this cash you can buy almost anything race tracks, stunt arenas, cars, upgrades...

hope it helped :)