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.

  • MaintenanceCosts Nobody here seems to acknowledge that there are multiple use cases for cars.Some people spend all their time driving all over the country and need every mile and minute of time savings. ICE cars are better for them right now.Some people only drive locally and fly when they travel. For them, there's probably a range number that works, and they don't really need more. For the uses for which we use our EV, that would be around 150 miles. The other thing about a low range requirement is it can make 120V charging viable. If you don't drive more than an average of about 40 miles/day, you can probably get enough electrons through a wall outlet. We spent over two years charging our Bolt only through 120V, while our house was getting rebuilt, and never had an issue.Those are extremes. There are all sorts of use cases in between, which probably represent the majority of drivers. For some users, what's needed is more range. But I think for most users, what's needed is better charging. Retrofit apartment garages like Tim's with 240V outlets at every spot. Install more L3 chargers in supermarket parking lots and alongside gas stations. Make chargers that work like Tesla Superchargers as ubiquitous as gas stations, and EV charging will not be an issue for most users.
  • MaintenanceCosts I don't have an opinion on whether any one plant unionizing is the right answer, but the employees sure need to have the right to organize. Unions or the credible threat of unionization are the only thing, history has proven, that can keep employers honest. Without it, we've seen over and over, the employers have complete power over the workers and feel free to exploit the workers however they see fit. (And don't tell me "oh, the workers can just leave" - in an oligopolistic industry, working conditions quickly converge, and there's not another employer right around the corner.)
  • Kjhkjlhkjhkljh kljhjkhjklhkjh [h3]Wake me up when it is a 1989 635Csi with a M88/3[/h3]
  • BrandX "I can charge using the 240V outlets, sure, but it’s slow."No it's not. That's what all home chargers use - 240V.
  • Jalop1991 does the odometer represent itself in an analog fashion? Will the numbers roll slowly and stop wherever, or do they just blink to the next number like any old boring modern car?
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