said by Crookshanks:That would be Highway 407, and yeah, it's a rip off for sure!
I drove on such a route (209 I think?) in Ontario on my way to Toronto. A few months after the fact I received an invoice in the mail (for $45 CAN! They aren't cheap!) for the toll charges that I then paid with a credit card. It was a pretty slick system and worked at full highway speeds without compelling you to slow down as E-ZPass does.