I equate these license plates with terrible money management skills. $900 for a license plate: "a fool and his money are soon parted" regardless of what income bracket they're in

Nah, I was thinking a raw eInk panel. Not one controlled by the state. One that can flip the numbers for 2 seconds, while driving past the surveillance cameras but be back on my real license plate number immediately just in case there are any cops watching. Hell, I could even run recognition against the rear dash cam, so that it overrides a flip if there are recognizable cop cars within view. Could be fun.