I got the call today
I got collector plates on my Dart, and it costs me about $200 a year, without the agreed value stuff, just like Cannucky...just can't drive it to work or school. SO WHAT! I get to drive it any other time, as many miles as I want, any time of the year for that measley $200. Like Chris says, it'd be ~$800/year with reg. plates, and no big advantage.
From what I understand, you can swap collector plates to another collector car (of lesser value) and drive it, as long as it's in your name. (Stand to be corrected on this one)