Uh...that’s not a Corvair. It looks like a Corvette concept vehicle.
Looks like that car came from this site .... http://www.cadvision.com/blanchas/54pontiac/54corvair.html
It’s a fastback ‘54 Corvair concept. According to this site, GM hadn’t decided between the names Corvair and Corvette at the time.
But the lines, other than the roof and the funky tail, are very similar to the original production Corvette.