Car hack

Is there is any way to hack cars or car prize pack (I got car prize pack from achievement its gave me Volkswagen )
and i can't get the another car prize pack ( i don't have any class S cars) so any one know any hack or bug for these?

dude .. save up 2mil IGC (easy with pursuit bot), buy Lexus LFA, install some performance parts on it and you'll have your first S class car !

complete s class champion.
then you can get a nice car from it.i got f1 elite.
if you want to know how to complete s class champion just replay me.
if you want s class car just use persuit bot for in game credits then after 200000$ just buy lexus then upgrade it with shop street parts.

How many races was S-class champion?

To 3000 driver points i got Chrysler Hemi
To 250 S class win i got BMW M3 GTS