[kevin_thibedeau]

It is a cost savings move. If you have power locks and a transponder system anyway, the lock cylinders are effectively redundant (minus security concerns) and can be eliminated for more profit.

[djrogers]

These cars all still have physical lock cylinders for backup, the key is usually hidden inside the fob.

[bradlys]

I don't think this is really how it is. From what I know, all of the cars have lock cylinders still because if your battery dies, how do you get into your car to replace or jump the battery?

There is a very slim key that is included in all the key fobs that I've seen.