They have a lot of ads on Speed channel.
There is a cayenne commercial with an RV where the driver of the RV gets out of the seat and runs to the back of his RV that is doing 65 down the highway to see the cayenne that is coming up behind him.
The taxi one described.
The carrera one that also talks about keeping the highways clean. I really like that one cuz you can hear the motors of those 996 carreras chugging along.
I have yet to see one dedicated to the boxster though.
Here in the SF bay area I probably see around 25 boxsters on my typical 30mi/60min commute. And a good 15 911s of some variant.
-AND-

I've seen two Cayenne S and one Cayenne turbo to date. The brakes on those things are MASSIVE.