11. Saab Aero-X
Unveiled in 2006, the Saab Aero-X was a dramatic showstopper, featuring a full cockpit canopy and controls inspired by fighter jets. Its ethanol-fueled engine and sleek, visionary design hinted at a new direction for the brand.
Unfortunately, the Aero-X remained a dream as Saab’s financial struggles deepened, leaving this innovative concept as a poignant “what could have been.”
More at Car and Driver