If my memory serves me correctly. That is a styling exercise commissioned by Alfa Romeo and undertaken by Bertone for the 1968 show circuit. One of my favourites from when I was a kid.
Never saw production.
I'm not sure but I think it was the first to use the now famous lambo scissor doors. I'm sure you could google and get lots of info.
Doug M
PANTERA INTERNATIONAL
A DE TOMASO CAR CLUB
Presents the De Tomaso Forums
The On-Line Meeting Place for De Tomaso Owners and Enthusiasts From Around the World
Clicking on the banner will take you to the sponsor's website.