I found this on the Sierra Sports web site at:
http://www.racesimcentral.net/
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NASCAR Racing 2 will continue to push Sierra Sports' new 3D physics engine as
far as it can go. NASCAR Racing 2 has all the racing realism of GPL plus
enhanced opponent car AI and astonishing 16-bit graphics.
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"All the racing realism of GPL"?? hehe I thought GPL was the "next advance in
driving physics?"
{sarcasm mode off}