Thank you to everyone who shared their photos on Wikicommons.

A special mention to:

Alexander Migl, Alexandre Prévot, Alf van Beem, allen watkin, Andrew Basterfield, Andrew Bone, Axion23, Ben, Brian Snelson, Calreyn88, Charles01, dave_7, Ermell, GPS 56, Greg Gjerdingen, HJUdall, Jeremy, JoachimKohler-HB, Lothar Spurzem, Matti Blume, MercurySable99, More Cars, Mr.choppers, MrWalkr, nakhon100, Prova MO, Rutger van der Maar, SG2012, Sicnag, The Car Spy, Thesupermat, Vauxford, Y.Leclercq, Zairon, 先従隗始.

Homepage images:

sportscars - Alf van Beem (source | license)
musclecars - Triple-green (source | license)
supercars - Brian Snelson (source | license)
hypercars - Axion23 (source | license)
1950s - Calreyn88 (source | license)
1960s - SG2012 (source | license)
1970s - Countachinfo (source | license)
1980s - Will Ainsworth (source | license)
1990s - paPisc (source | license)
2000s - Winning Automotive Photography (source | license)
2010s - Y.Leclercq (source | license)
2020s - Matti Blume (source | license)