I just checked ebay for the one you mentioned:
http://cgi.ebay.com/ebaymotors/ws/eB...spagename=WDVW
I think it's pretty safe to say that auction isn't for real. It doesn't even have pictures of the actual car. Those pictures are just production pictures you can find on the web. And a 1.7 million dollar car would have more than a paragraph written about it, and wouldn't look like it's copied from a car preview website.
As for the car... pretty insane specs but personally i'm not too into it's design.