I had a Hertz rental from YYZ in October 2006 where I used the 407 to get from YYZ to Pickering and back. I thought I had gotten off without any fees; but in May 2007, Hertz sent me a receipt that equated to about $35 USD including the tolls and the admin fee, as I recall. They charged the same credit card I had used for the rental. Guess they must've been a little backed up at the Hertz administrative offices if it took them 7 months to charge my card for using the 407.