Track "Newton Cup" based on Iowa Speedway (formally D-Shape Speedway)
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Copyright  2002 Eric Espie
Copyright  2009/2010 	Xavier Bertaux, Eckhard M. Jger & Jaime Vives Piqueres
Copyright  2013 	Eckhard M. Jger

Copyleft: this work of art is free, you can redistribute
it and/or modify it according to terms of the Free Art license.
You will find a specimen of this license on the site
Copyleft Attitude http://artlibre.org as well as on other sites.

