Absolutely! Their GM/AeroVironment Sunraycer of 1987 sorta, single-handedly redefined the solar race car.
Sunraycer was reported by Cal Tech to be the lowest drag land vehicle ever measured. Below Cd 0.1165.
I've heard as low as Cd 0.089 with wheel fairings. Cd 0.125 as-raced. And later, GM claimed Cd 0.147, but I think that this is a crosswind averaged Cd, based upon changing SAE protocols.
After 1987, GM provided Magna-Quench motor technology to teams, as well as access to their GM-owned Hughes Aerospace VSAERO, CFD software.
Many teams, including HONDA just copied Sunraycer for the 1990 race season.
Paul MacCready, of AeroVironment, calculated that with a modest ICE powerplant, Sunraycer would be good for 400-mpg, and their 'Impact' BEV, 100-mpg.
The 1991 GM Ultralite had the Impact aerodynamics, and did 100-mpg @ 50-mph.
GM's Oldsmobile AEROTECH long-tail set a closed-course land speed record, with AJ Foyt behind the wheel.
All of these cars, and other GM concepts have inspired my projects.
