A motorist was clocked doing 210 kilometres an hour on Highway 640 between Rosemere and Blainville early this morning.
Provincial police flagged down the Mercedes near Blainville shortly before 3 a.m.
The driver was a man in his fifties and when the officers detected an odour of alcohol about him, they asked him to take a Breathalyser test, which he failed.
His car was impounded on the spot and he was handed a ticket with 24 demerit points and fines totalling $2,000.