There are plenty of henges based on the vehicle type we often refer to as "a car" - amongst others Carhenge (awesome photograph!) by Jim Reinders, 1987 AD and Dubhenge by the Hugh Jart artist collective that consists solely of Volkswagen cars, 1996 AD. But the first known "Autohenge" was created 1986 AD by William Lishman for the Chrysler tribe company.
Built to the exact same scale as Stonehenge - but probably a bit less heavy despite the cars' iron carcasses - 'Autohenge' surely deserves a place in our top 10.
Sadly enough, Autohenge was destroyed in 2001 AD.
Extracted from 'Unlock the Wonders - Heritage Key'. Please click here to be taken to this unusual site.
Other unusual henge's include, butterhenge, cellphonehenge, doorhenge, computerhenge, tamponhenge among others.