NFS Hot Pursuit 2 traffic and player cars

[Seahawk]

I today experimented NFS Hot Pursuit 2 and changed the price of all cars and tracks to 1. I saw that on player cars it is written:
Traffic:False
And on traffic cars:
Traffic:True

I trued the Porsche 911 Turbo to traffic. But when I gone to the vehicle selection screen it crashed. It is fixed now. But is there any way to place player cars in traffic?

[sajmon14]

Ask on some nfs website like nfscars.net. We dont know the answer