add more car slots

These should definitely be added into the game, especially since the body kit button in the store is carbon fibre. This is essentially false advertising and misleading as people would spend hundred upon thousands of dollars hoping for one, even though there isn't one. Please add this into the game!

Would love to see cars like the ford fusion/mondeo saloon/wagon, opel/vauxhall insignia, vw passat/ passat cc, subaru legacy mk1 estate/saloon mk1 - present