Good news! I obtained these photos from a confidential Tesla source. They show plenty of room behind the upper part of the nose cone for a radar detector, EZ-pass transponder, laser sensor protrusion (if mounted in the nose cone itself), and other devices. The photos all show the locations of the six clips that attach the nose cone -- good to know for those who want to pry it off to install stuff. There's certainly plenty of room back there for all I want to do.