Paul Ricard, FIA/WEC Prologue, 6/7 April 2018: #91 Porsche 911 RSR LMGTE Pro driven by Richard Lietz/Gianmaria Bruni (left), #92 driven by Michael Christensen/Kevin Estre (right) Activities have concluded for Porsche at the 2018 WEC Prologue, and by all accounts, it went very smoothly. Run over two days in the...