GM EV1, discontinued in 1996, remains aerodynamic benchmark with 0.19 Cd.
New $130,000 VW XL1 uses every aero trick in book, but looks nerdy, barely bests EV1 with 0.189 Cd.
Chevy Volt extended range electric vehicle has 0.28 Cd; Once cutting edge number, latest mainstream cars catching up.
Toyota Avalon Hybrid fullsize sedan does not look especially aerodynamic, yet has impressive 0.28 Cd.
Toyota Prius sports iconic aero design, currently has 0.25 Cd.
Changes invisible to consumers, such as under floor panels, popular means of improving aero of many new vehicles.
Aerodynamicists now scrutinizing engine compartment cooling systems, responsible for 10% of aerodynamic drag.
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