Do any cars have "traditional keys" anymore? My 15 year old Corolla has an embedded RFID tag in the key, and can only be duplicated at a Toyota dealership.
Assume that for anything new enough to have keyless entry, the answer is no.
The big switchover was in '96 when OBDII/CAN bus became mandatory. At that point it became pretty cheap to do things electronically, often cheaper than mechanically, so lots of things started switching over around then.
