2013 Canadian Grand Prix practice session photo Photo 10 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, 1:01 p.m. Pile of tires with tire warmers from the Ferrari garage. Auto123.TV 2013 Photographer: Philippe Champoux | © auto123.com