The 4-seat Edison2 Very Light Car has a frontal area of 1.7082 sq m (18.387 sq ft) for a CdA of 0.248 sq m (2.667 sq ft) using the "old" Cd of 0.145; or 0.275 sq m (2.96 sq ft) with the new SAE Cd of 0.161.
Some photos of the car that was in the GM wind tunnel on the highway!