Good point. Just remember the issues automatic transmission may have when a car is parked on a steep hill in "P" with no parking brake engaged... This in worst case can lead to a lock out situation so yes, there for sure is a stress on things.
On the other hand - that's what a transmission is made for - but for sure not "P" in an automatic transmission or a backup light switch...
Looking forwards to getting this fixed. I never realized that the ZR has 4 (!!!) backup lights. It's an amazing amount of light it sheds to make backing up safe
