Newbies can't get almost all the Motorpass or Summit cars. This is why I suggest this:
LIMITED SALES
The limited sales consist of a summit or motorpass car on sale for 1 week only. Every week there will be a new exclusive car for sale! This is similar to NFS MW 2012 Mobile where you can get a NFS car the dealership offers you every week.
Already have the week's car? You will get bucks from 800k - 2 millon bucks!
I think this is a great idea to let the newbies and veterans progress and it should be considered