How do you unlock all the cars in hot wheels world race?

Cloud 9

50: 40 Somthin

100: Golden Arrow

Satellite City

50: Aeroflash

100:Pony Up

Vapor City

50: Power Pistions

100: Zotic

Tezla's Cube

50: Malestrom

100: Silhoette II

Space Out

50: Jester

100: MST Suzuka

Mist Mountain

50: Rodger Dodger

100: 1/4 Mile Coupe

Emerald Crater

50: Vulture

100: Power Rocket (Impossible On Gamecube)

Deep Zone:

50: Power Pipes

100: Switchback

Egyptian Dunes:

50: Seared Tunner

100: Sweet 16 II

Glacier Edge:

50: Side Draft

100: Road Rocket

Lava Twists:

50: Sooo Fast

100: Muscle Tone

Pyramid Run:

50: Super Tunned

100: Mega Duty

Submerged City:

50: Backdraft

100: Nomader What

Ice City:

50: 24 Seven

100: Hot Wheels Prototype 12

Vast Jungle:

50: Twin Mill

100: Greased Lightning