Here is some stuff on the four rotor Corvette.

Paul Lamar ...No rotor no motor.

Just wondering out loud, What ever happened to this car? Does anyone know?
Did it end up in a museum or the scrap pile.
Thomas Phy

GM policy is to scrap prototype cars to keep them out of the hands of private
owners. They first crashed and then scrapped my prototype mid engine Firebird.

The Mid-Engine Firebird by John Lamm
(Article about the prototype Mid-Engine Firebird designed by Paul
Lamar and built by Lamar Engineering under contract with the Pontiac
Division of GM.)
Motor Trend
February 1972