It's A Drag: Does Wind-Tunnel-Vision Kill Car Design?

Bertel Schmitt
by Bertel Schmitt

Do you think that cars have lost their soul? Nina Tortosa, General Motors aerodynamicist for the Voltec/E-Flex programs, says that cars look more and more alike because “we all have to abide by the same laws of physics. It doesn’t matter if we don’t like them,” Nina Tortosa told WardsAuto.

Mere mortals have to contend with two certainties – death and taxes. Car designers are faced with a third one: Cd, or the drag coefficient.


When I was in advertising, countless engineers tried to explain the drag coefficient (a.k.a. “Cw-Beiwert” – we were in Germany) to me, until one found an ingenious solution: “You want a low one.”

They also told me the secret why the final car never looks like that flashy design study. The wind tunnel, or now rather the drag simulator is the big equalizer. “It’s a drag,” complained one designer to me, “those damned aerodynamics kill all my ideas.”

Joe Dehner, chief of Dodge and Ram Design at Chrysler, had the same experience: “We, as designers in the late ’80s and early ’90s, were in an organic phase, but aerodynamicists didn’t want organic lines,” he told WardsAuto. “We would take it to the wind tunnel and they would put corners on (it), and (we) would say, ‘You’re ruining my design.’”

Bertel Schmitt
Bertel Schmitt

Bertel Schmitt comes back to journalism after taking a 35 year break in advertising and marketing. He ran and owned advertising agencies in Duesseldorf, Germany, and New York City. Volkswagen A.G. was Bertel's most important corporate account. Schmitt's advertising and marketing career touched many corners of the industry with a special focus on automotive products and services. Since 2004, he lives in Japan and China with his wife <a href="http://www.tomokoandbertel.com"> Tomoko </a>. Bertel Schmitt is a founding board member of the <a href="http://www.offshoresuperseries.com"> Offshore Super Series </a>, an American offshore powerboat racing organization. He is co-owner of the racing team Typhoon.

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  • Ttacgreg Ttacgreg on Jun 21, 2011

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  • M 1 M 1 on Jun 21, 2011

    I don't know what the Italia's CD is, but I suspect it's good, and it's still sporting homewrecker good-looks. The obvious solution is to make everything mid-engine. Problem solved. I will post my forwarding address for royalty checks later this afternoon.

  • Master Baiter Mass adoption of EVs will require:[list=1][*]400 miles of legitimate range at 80 MPH at 100°F with the AC on, or at -10°F with the cabin heated to 72°F. [/*][*]Wide availability of 500+ kW fast chargers that are working and available even on busy holidays, along interstates where people drive on road trips. [/*][*]Wide availability of level 2 chargers at apartments and on-street in urban settings where people park on the street. [/*][*]Comparable purchase price to ICE vehicle. [/*][/list=1]
  • Master Baiter Another bro-dozer soon to be terrorizing suburban streets near you...
  • Wolfwagen NO. Im not looking to own an EV until:1. Charge times from 25% - 100% are equal to what it takes to fill up an ICE vehicle and 2. until the USA proves we have enough power supply so as not to risk the entire grid going down when millions of people come home from work and plug their vehicles in the middle of a heat wave with feel-like temps over 100.
  • Kwik_Shift_Pro4X Where's the mpg?
  • Grg These days, it is not only EVs that could be more affordable. All cars are becoming less affordable.When you look at the complexity of ICE cars vs EVs, you cannot help. but wonder if affordability will flip to EVs?
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