Heavy rain and pools of water on the track forced Champ Car World Series officials to halt Sunday's Montreal Grand Prix after just six of 72 laps, postponing the completion of the event until yesterday.
The race at Circuit Gilles Villeneuve near the heart of downtown Montreal was set to resume yesterday at 10am on the 4.4km road course.
The Atlantic Championship support race, originally scheduled for Sunday morning, will also be run today before the Champ Car race.
The race began Sunday in a steady rain and series leader Sebastien Bourdais, who started at the pole, lost the lead to title challenger A.J. Allmendinger on the second turn when the Frenchman nearly spun off the course.
The lead didn't change until the rain got worse and officials put out a red flag, halting the racing. After a three-hour wait, the officials decided the conditions were not going to be good enough to continue on Sunday.