Had hoped to have had this pulled together long ago as well.
This list represents vehicles which share the same shape drag as Spirit,as of 2014,based upon the DARKO Technologies wind tunnel test results.
If given the same frontal area,they would be indistinguishable from one another,as far as the atmosphere is concerned.
*1927 Spirit of St. Louis, Ryan NYP fuselage
*1933 Walter Lay Model# 12
*1934 DeSoto Airflow aerodynamic test mule, minus the tail stinger
*1939 BMW 328-based,Touring Super Leggera
*1948 Tucker Torpedo
*1951 Hotchkiss Gregoire
*1952 Alfa Romeo Disco Volante concept
*1953 Panhard Dyna sedan 54
*1960 PFY concept, Prof. Alberto Morelli
*1967 Porsche 907 Longtail, Le Mans
*1969 Chrysler Dodge Charger Daytona, sans wing, @ 18-degree backlight
*1970 Citroen SM
*1975 Nissan AD-1 concept
*1977 NASA 'Shoebox' Ford Econoline van w/ edge radii & belly pan
*1979 Citroen CX
*1980 Medusa concept, ItalDesign
*1981 NASA Ford Econoline aerodynamic test mule with all-rounded edges and full belly pan
*1982 AVION, by Craig Henderson
*1986 Brabus Autosports' Mercedes-Benz W124-Series with aero kit
*1987 GM Oldsmobile AEROTECH Longtail, Ed Welburn
*1988 Dimensione Design PPG 4X4 pace car
*1989 OPEL Calibra 16-V
*1990 GM Chevrolet CERV-III mid-engine Corvette concept
*1993 FIAT Punto w/ ring vortex & fan wheels
*1994 Audi A8
*1994 Chrysler AVIAT concept
*1995 M-B E-Class
*1996 BMW 5-Series
*1996 VW Passat sedan/wagon
*2000 M-B S-Class
*2001 LEXUS LS 430
*2002 M-B E-Class
*2003 Toyota Prius
*2003 INFINITI G35 Coupe w/ aero pkg.
*2004 M-B CLS-Class
*2006 HONDA CIVIC Hybrid
*2006 LEXUS LS 460
*2006 M-B S-Class
*2006 M-B S550
*2007 BMW 320d
*2007 GM Opel Insignia- Eco Flex
*2007 M-B C-Class
*2007 Toyota Camry Hybrid
*2009 BMW E90
*2009 LEXUS HS 250h
*2009 Mazda 6i GT
*2009 NISSAN GT-R
*2010 Audi A8
*2010 Hyundai i-flow concept w/ 'Tesla' mirrors
*2010 KIA Ray concept w/ 'Tesla' mirrors
*2011 Buick Regal
*2011 Audi A6/S6 Quattro
*2011 OPEL Insignia
*2011 GM Buick Regal
*2011 GM SAAB Phoenix concept w/ 'Tesla' mirrors
*2011 Audi A8L
*2011 Audi A6 QUATTRO
*2012 KIA Optima Hybrid
*2012 BMW 3-Series
*2012 Tesla Model S
*2013 Infiniti Q50
*2013 Lexus GS
*2013 Mitsubishi CA-MiEV concept
*2013 VW Jetta Hybrid
*2014 Toyota Prius
*2014 BMW i8
*2014 Spirit of Ecomodder
*2014 Infiniti Q50
*2015 Hyundai Genesis
*2015 Jaguar XE
*2015 SCION FR-S
*2015 Subaru BR-Z
*2015 VW XL Sport concept w/ 'Tesla' mirrors
*2016 BMW i8
*2016 BMW 340
*2016 BMW 4
*2016 Chrysler 200
*2016 Hyundai Elantra
*2016 Hyundai Sonata
*2016 Mazda-6
*2016 Mitsubishi Mirage-G
*2016 Jaguar F-Type
*2016 BMW 340
*2016 Jaguar XF
*2016 Prof., Ph.D. Joseph Katz' 'generic SUV' with full boat-tail
*2016 VW Golf-VII Euro spec
*2016 VW e-Golf BEV
*2019 KIA K900
*2020 Audi e-tron Sportback
*2020 VW ID.3
*2023 Toyota bZ4X
*2023 Toyota Crown
*2023 Fisker OCEAN w/22-inch Air Glider wheels
*2023 Porsche Taycan 4 Cross Turismo
*2023 Subaru Solterra
*2023 Toyota PRIUS
With a March 1974 copy of CAR and DRIVER and some perspicacity,one could embark on 43-years of streamlining mischief!
