Unlockable cars:
     Enter  any  of the codes bellow, then win the indicated challange
to unlock the correcponding car in the DNA lab.

Unlock the Ascari KZ1:
     Enter KNOX as a DNA Lab code and win the Last Man Standing 
challenge.

Unlock Frito-Lay Infiniti G35: 
     Enter MNCH as a DNA Lab code, then win this special challenge.

Unlock Koenigsegg CCX:
     Enter KDTR as a DNA Lab code, then win this special challenge.

Unlock Mitsubishi Prototype X:
     Enter DOPX as a DNA Lab code, then win this special challenge.

Unlock Nissan 350Z: 
     Enter PRGN as a DNA Lab code, then win this special challenge.

Unlock Saleen S7: 
     Enter WIKF as a DNA Lab code, then win this special challenge.

Unlock Seat Leon Cupra R: 
     Enter FAMQ as a DNA Lab code, then win this special challenge.

Unlock Nissan Skyline R34 GT-R:
     Enter JWRS as a DNA Lab code and win the Retail challenges.

Unlock BMW Z4:
     Enter GVDL as a DNA Lab code and win this special challenge.

Unlock Audi TT 1.8L Quattro: 
     Enter YTHZ as a DNA Lab code, then win this special challenge.

Unlock BMW Z4 Roadster: 
     Enter GVDL as a DNA Lab code, then win this special challenge.

Unlock Holden Monaro: 
     Enter RBSG as a DNA Lab code, then win this special challenge.

Unlock Infiniti G35: 
     Enter BSLU as a DNA Lab code, then win this special challenge.

Unlock Infiniti G35: 
     Enter MRHC as a DNA Lab code, then win this special challenge.


Recommended car:
     At  the  start  select  the Mazda RX-8, becuase is the fastest in
stock out of all the other cars. It is worth to try the Toyota Corolla
GTS or Nissan 200SX also.