Here is one I've been driving. This video is a bit old. The speedometer is very accurate under acceleration. The way it SHOULD be.

http://www.ejzcars.com/RealSDL.wmv

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1987 300SDL (324000)

1986 Porsche 951 (944 Turbo) (166000)

1978 Porsche 924 (99000)

1996 Nissan Pathfinder R50 (201000)