I found on this site some Cars games soundtracks, but I see there's no soundtracks for Planes, Cars Toon and some other games.
I'm bought Planes Video Game on Steam (http://store.steampowered.com/app/286880/) some time ago... And I can't even play it 'cause "my hardware does not meet the minimum requirement for this game", so I'm digging files and found music. Cars Toon downloaded only for rip purpose.

Planes Video Game Gamerip Soundtrack in original format (*.mp3) and quality here (https://mega.co.nz/#!zs4B2K7K!RxIJ6cq_qolpY3Ej6ZyRQ2oNz_p3j21Va_-HjVd1I2A), and Cars Toon Video Game Gamerip Soundtrack (almost loops) converted to from *.wav to *.mp3 here (https://mega.co.nz/#!TxgTXTAZ!VZf89Pg-ht6olbtMhovuiHCTy1y7mQqhs1CFxZSvCWg).

I'm gonna update this thread when find some more Cars/Planes video games music.