I came across this while doing a little research. Officially classified as the XP-798, it was another John Z. DeLorean creation - this one from 1966. Sources on the internet most commonly refer to it as the "Banshee II", but at least two sources named it the "Scorpion". Look how the doors open out wide and forward of the A-pillar!
http://www.carstyling.ru/en/car/1966_pontiac_banshee_xp_798/
The news release, dated April 8, 1966 reads:
"LATEST FROM PONTIAC -- The Banshee, labeled after the Marine jet fighter plane, is the newest Pontiac Motor Division dream car. The aerodynamically-styled four-seater is built on a 109-inch wheel base. Overall length is 196.7 inches while overall height is but 49.8 inches. Doors, which are about 20 inched longer than conventional doors, open by sliding parallel to the body. To improve rear seat entry, there are two gull-winged flippers which open perpendicular to the roof line. Headlamps of the Banshee retract into the hood surface and taillights are semi-concealed."
Sounds like a precurser to t-tops and blacked-out taillight lenses!
Also, speaking of John Z. DeLorean, here's this week's feature from PontiacsOnline:
http://www.pontiacsonline.com/JOHN%20DELOREAN.htm
Note that the year for "Banshee I" is in error - that prototype was built in 1964.

http://www.carstyling.ru/en/car/1966_pontiac_banshee_xp_798/
The news release, dated April 8, 1966 reads:
"LATEST FROM PONTIAC -- The Banshee, labeled after the Marine jet fighter plane, is the newest Pontiac Motor Division dream car. The aerodynamically-styled four-seater is built on a 109-inch wheel base. Overall length is 196.7 inches while overall height is but 49.8 inches. Doors, which are about 20 inched longer than conventional doors, open by sliding parallel to the body. To improve rear seat entry, there are two gull-winged flippers which open perpendicular to the roof line. Headlamps of the Banshee retract into the hood surface and taillights are semi-concealed."
Sounds like a precurser to t-tops and blacked-out taillight lenses!
Also, speaking of John Z. DeLorean, here's this week's feature from PontiacsOnline:
http://www.pontiacsonline.com/JOHN%20DELOREAN.htm
Note that the year for "Banshee I" is in error - that prototype was built in 1964.