PUSLINCH, Ont. - A man driving along Canada's busiest highway is facing drug and speeding charges after being pulled over by none other than Ontario's top cop.

Ontario Provincial Police Commissioner Julian Fantino was on his way to a speaking engagement Thursday in Ingersoll, but that didn't stop him from taking on the duties of a highway patrol officer.

Fantino clocked a vehicle allegedly travelling at 170 kilometres an hour on Highway 401 and officers from the Cambridge detachment allege they found cocaine and marijuana.

Curtis Wint is charged with various drug and driving offences. His vehicle was impounded and his licence suspended for seven days under the province's new anti-racing law.

It wasn't the first time Fantino went beyond his management duties.

Last May long weekend, three cars, allegedly racing each other, passed a car Fantino was in and he radioed ahead to catch them.