Not an A body, but I put about 9,000 miles a year on my '72 Challenger. I'm closing in on 45k miles on it in the last 5 years I've owned it. I drive it year round, rain, snow, whatever. Longest single drive I've done with it was a little over 5 hours straight each way, but I drive it pretty routinely out to visit family, and that's almost 2 hours each way.
I mention it because my Duster will soon be taking over as my daily, so I expect to put the same 9 to 10k miles a year on it as well.
I don't own any cars newer than the '74 Duster, so whatever car fills the role of my driver is truly a daily driver that gets used for everything.