2013 Canadian Grand Prix practice session photos Photo 75 of 107
Force India's Paul di Resta was the surprise pacesetter in an opening practice session at the 2013 Canadian Grand Prix on Friday that was marked by continually changing track conditions.
Circuit Gilles-Villeneuve, Montréal, Québec, Canada June 7, 2013, 5:35 p.m. Sergio Pérez, McLaren Auto123.TV 2013 Photographer: Philippe Champoux | © auto123.com