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.

More by Bertel Schmitt

Comments
Join the conversation
2 of 48 comments
  • Ttacgreg Ttacgreg on Jun 21, 2011

    cancel edit

  • 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.

  • Redapple2 Love the wheels
  • Redapple2 Good luck to them. They used to make great cars. 510. 240Z, Sentra SE-R. Maxima. Frontier.
  • Joe65688619 Under Ghosn they went through the same short-term bottom-line thinking that GM did in the 80s/90s, and they have not recovered say, to their heyday in the 50s and 60s in terms of market share and innovation. Poor design decisions (a CVT in their front-wheel drive "4-Door Sports Car", model overlap in a poorly performing segment (they never needed the Altima AND the Maxima...what they needed was one vehicle with different drivetrain, including hybrid, to compete with the Accord/Camry, and decontenting their vehicles: My 2012 QX56 (I know, not a Nissan, but the same holds for the Armada) had power rear windows in the cargo area that could vent, a glass hatch on the back door that could be opened separate from the whole liftgate (in such a tall vehicle, kinda essential if you have it in a garage and want to load the trunk without having to open the garage door to make room for the lift gate), a nice driver's side folding armrest, and a few other quality-of-life details absent from my 2018 QX80. In a competitive market this attention to detai is can be the differentiator that sell cars. Now they are caught in the middle of the market, competing more with Hyundai and Kia and selling discounted vehicles near the same price points, but losing money on them. They invested also invested a lot in niche platforms. The Leaf was one of the first full EVs, but never really evolved. They misjudged the market - luxury EVs are selling, small budget models not so much. Variable compression engines offering little in terms of real-world power or tech, let a lot of complexity that is leading to higher failure rates. Aside from the Z and GT-R (low volume models), not much forced induction (whether your a fan or not, look at what Honda did with the CR-V and Acura RDX - same chassis, slap a turbo on it, make it nicer inside, and now you can sell it as a semi-premium brand with higher markup). That said, I do believe they retain the technical and engineering capability to do far better. About time management realized they need to make smarter investments and understand their markets better.
  • Kwik_Shift_Pro4X Off-road fluff on vehicles that should not be off road needs to die.
  • Kwik_Shift_Pro4X Saw this posted on social media; “Just bought a 2023 Tundra with the 14" screen. Let my son borrow it for the afternoon, he connected his phone to listen to his iTunes.The next day my insurance company raised my rates and added my son to my policy. The email said that a private company showed that my son drove the vehicle. He already had his own vehicle that he was insuring.My insurance company demanded he give all his insurance info and some private info for proof. He declined for privacy reasons and my insurance cancelled my policy.These new vehicles with their tech are on condition that we give up our privacy to enter their world. It's not worth it people.”
Next