As I am booting Macs a couple hundred times a day I started to get sick of seeing the CUDA Pref pane always pop up on desktop.
Whether I need an update or not, I don't need the clutter.
I found this nifty terminal line that makes it stops bothering me.
rm -f /Library/LaunchAgents/com.nvidia.CUDASoftwareUpdate.plist
And next boot you'll only see it when you invite it to your desktop.
Thanks to rgov at Nvidia forums.