“Speeding drivers in south China are getting clear away thanks to machines which switch the numbers on their licence plates in seconds, state media said on Tuesday.” - Reuters
I’ve read London has similar problems with drivers beating the camera-enforced congestion fee by stealing plates. I suspect it would’ve been only a matter of time before the problem struck New York had the Mayor’s congestion proposal been implemented. Separating the point of (anonymous) observation from the point of fine/fee collection incentivizes cheating.