Interesting comment by David K. about the copper car weighing about the same as an original Cobra but less than a current Kirkham in alloy. So, the weight difference won't be a big factor on performance, unless you plan to go racing. An unlikely pursuit with THIS car.
The car has in fact been offered for sale before. I'm wondering how many owners it has now had since it was originally sold by Kirkham? Looks like the plans to make "10" fell through as apparently this is "one of one".