slleeper

Hi everyone, i dont know if it is a issue or just my ignorance. At first i am only level 10 and I just have unlocked Hawaii. I have installed unofficial pack which contains for example Lamborghini Aventador or Gallardo.. But my problem is: I cant find Ferrari Scuderia or Bugatti Veyron or Ariel Atom. In Ferrari car dealer i can see only Ferrari 599 GTO, China editon, Enzo but no scuderia. Is it normal? Can i buy this Ferrari after some progress? And the same in European cars dealer and in British cars dealer. They dont sell Veyron and Atom. Is there any level that will unlock these cars? I would be really pleased if you help me. Thank you!