<https://www.supercars.net/blog/1970%e2%86%921971-porsche-917-kurzheck/1970_porsche_917kurzheck-5-1024/>
<http://schema.org/dateModified>
<https://www.supercars.net/blog/1970%e2%86%921971-porsche-917-kurzheck/1970_porsche_917kurzheck-5-1024/>