I think the novelty of them is simply wearing off (as well as the gas prices being so ridiculous). I am on my second H2 and unless something spectacular changes in upcoming designs I don't think that I would buy another.
I had one of the very first ones off the line here in New England when they first came out and for a while it stood out on the street. Now I see 5-10 each day on the roads in my town, and Dover NH is not by any standard a large city. Quite small in fact...
As far as trade-in value they have none! I recently looked into trading my clean 05 Lux with 64k on it in towards a Super Duty or a Suburban and was receiving trade in values of $22-27k. I'd rather pour gas over my hood and watch it melt than to give it away for $22k!
You may see mine here for sale soon. I need something bigger, 2 kids, 4 dogs and a ton of gear every weekend when heading to the lake