[aerohead]

Here's a short list of mirrors which appear to have been thought out pretty well as far as drag goes.At least one of the cars is priced at over $2,000,000 US.
*2013 Dodge Viper,American Le Mans Northeast Grand Prix race car.
*2015 Ford MUSTANG Shelby GT.
*2015 Cadillac ATS-V.
*2015 Scuderia Cameron Glickenhaus SCG 003.
*2015 NISSAN NISMO LMP-1-Hybrid (Ben Bowlby).
*2015 Tudor P2-Class,24 Hours of Daytona MAZDA Skyactiv turbodiesel race car.
*2017 Ford GT.
*2017 Jaguar XE
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Here's the rest of the list so far (in no particular order)
*2012 McLaren MPC-12C
*2014 Aston Martin V12 Vantage S
*2012 Aston Martin V12 Zagato
*2012 Ferrari F12 Berlinetta
*2014 McLaren P1
*2015 Aston Martin V8 Vantage GT
*2014 Porsche 918 Spyder
*2013 McLaren 12 Spider
*2013 IMSA,Tequila Patro'n,Extreme Speed Motorsports ALMS P2 race car
*2015 Audi R18 e-tron
*1971 Porsche 917-10 Can Am race car
*2012 MUSCLE MILK, HPD ARX-03a,ALMS LMP1 race car
*2012 NISSAN DELTA WING
*2013 SLS AMG Coupe Black Series M-B race car
*2012 Ferrari 599XX race car
*2012 Ferrari ENZO
*2012 Ferrari LaFerrari
*1970 HONDA 600
*2016 M-B AMG GT S
*2013 Infiniti Q50
*2013 Cadillac CTS Vsport
*2013 Aston Martin Vanguish
*2013 Aston Martin Rapide S
*2012 Maserati Gran Turismo MC
*2012 Aston Martin DBS Volante Carbon Edition
*2015 McLaren 650 S
*2015 2015 Chevy VOLT-II
*2013 ACURA NSX concept
*2013 Factory Five 818S
*2012 GMC Acadia Denali
*2012 Renault Alpine A110-50 concept
*2014 GMC Yukon Denali