In New Jersey they don't allow non current plates for historic or collector cars...you need to buy QQ or Historic plates. However, I am a license plate collector and amateur plate restorer..so I like to put YOM plates on my trucks when I drive or show them...I finesse the law by attaching my YOM plates over my current historic plates using velcro dots. I've been stopped once and the officer only wanted a close-up look at my 'Burb.
I don't know of anyone who was arrested or even got a ticket for this type of YOM plate display.
