I drove one for a short while.
Didn't mind it, but man, did it ever roar for the amount of acceration I got. The Vette engine is a welcome upgrade.
The interior design was retro-pleasant, and the cargo bed holds more than any sports car. Didn't find it overly cheap, but it didn't seem as solid over expansion joints et all. The heft can be felt motoring around too, so it's not much fun beyond a looker and a cruiser, unless there was lots more usable power.
I think the $70,000 price from the Chevy store has a bit more to do with why there aren't more.
The power top worked really well tho. The best design and functional element by far!