...Tesla Model S Customization...
How To Remove The Front Bumper
Model S Customization
I found and article on TeslaMotorsClub.com forum that discusses how to remove the front bumper nose, which should allow access to placing a radar detector or auto toll transponder in the nose. Check out more on how to remove the front bumper of a Tesla Model S.
Here is a video that shows how to remove the nose cone.