Thanks, Pizzaguy.
I should add that the push button start kit that I bought has it's own RFID/Bluetooth/NFC technology so leaving it unlocked does not mean that anybody could drive away in it. They would need the new fob and know where I put the sensor...
It is actually kind of cool. Two factor authentication in my car (something I have AND something I know) or security through obscurity. In my Bimmer, all you need is the key and the car is compromised.
Honestly don't know whether it would be easier to hotwire the car now or before and I think that a dedicated thief would figure out either one in minutes but at least they don't have a predefined plan with mine.
Thanks,
Kent