jtr1962
Storage? I am Storage!
Certainly true although frontal area is usually constrained by the vehicle's intended use.Cd is an oft abused term. You should probably use cdA (A = area). For two vehicles with nominally similar cd, this looks good on paper, but if one is a mini-car and the other is AN SUV, the SUV will have much more drag to overcome == more fuel, which mean more power == larger power plant, heavier construction to support larger loads == more weight == larger power plant == more fuel, and so it goes...
A short list of drag coefficients I found here:
* 2.1 - a smooth brick
* 0.9 - a typical bicycle plus cyclist
* 0.7 to 1.1 - typical values for a Formula 1 car (wing settings change for each circuit)
* at least 0.6 - a typical truck
* 0.57 - Hummer H2, 2003
* 0.51 - Citroën 2CV
* 0.42 - Lamborghini Countach, 1974
* 0.39 - Dodge Durango, 2004
* 0.38 - Volkswagen Beetle
* 0.372 - Ferrari F50, 1996
* 0.36 - Citroën DS, 1955
* 0.36 - Ferrari Testarossa, 1986
* 0.36 - Citroën CX, 1974 (the car was named after the term for drag coefficient)
* 0.35 - Scion xB
* 0.34 - Ford Sierra, 1982
* 0.34 - Ferrari F40, 1987
* 0.33 - Dodge Charger, 2006
* 0.31 - Citroën GSA, 1980
* 0.30 - Saab 92, 1947
* 0.30 - Audi 100, 1983
* 0.30 - Porsche 996, 1997
* 0.29 - Porsche Boxster, 2005
* 0.29 - Honda Accord Hybrid, 2005
* 0.29 - Lotus Elise, 1958
* 0.28 - Porsche 997, 2004
* 0.27 - Infiniti G35, 2002 (0.26 with "aero package")
* 0.26 - Toyota Prius, 2004
* 0.25 - Honda Insight, 1999
* 0.212 - Tatra T77, 1938
* 0.19 - Mercedes-Benz "Bionic Car" Concept, 2005 (based on the boxfish)
* 0.137 - Ford Probe V prototype, 1985
I would kill for a bike with a Cd under 0.1. You can see in this list how awful a cyclist is compared to everything else.