In my opinion, I don't think the smart will be a collector's car for the long, foreseeable future. I mean, maybe in 50 years, but is it worth it to keep one in pristine condition for that long? I think it's also kind of instructional to look at how similar cars have fared. Like maybe the Scion IQ. That car stopped production a few years back and at least in this area, there is no hint of collectability. Prices seem fairly decent for used models, probably because they share ease of parking with smarts but have an infinitely better dealer network. And even the Aston Martin Cygnet version doesn't seem to be that much in demand. So IMO any price at or above MSRP because of the car's collectability is going to appeal to very, very few people.
So that leaves people for whom a smart works because of its size, and in need of more range than the EQ version provides. But that market has already been seemingly saturated when the ICE model was on sale, and now this new ICE is competing against all of the used ICE vehicles that have come on the market. So compared to a low mileage, excellent example, this new ICE primarily is better due to longer factory warranty coverage. So, my opinion is that this may be worth what the most pristine example of a low mileage 2017 ICE is, plus $1-2k.