Hey @amir can you share the link to the dataset? It would have a README about the structure.
From your notebook, I can see that you have printed the classes of cars but not the mapping of which set of images belongs to which class, this is necessary. After this, you can
Progamatticaly/Mannualy arrange the images in folders of classes (One-time operation)
@amir have you solve your problem? can you please share you notebook if it is complete. i have the same problem with data processing. please help. thanks