Toronto (H1B): How long does it take get the passport?

[TkNeo]

I was reading through this webpage and it says that passports will be available only through courier.
http://www.amcits.com/toronto.asp

Aren't they available the next day by 3 or 4PM. ?

Also i have to catch a flight back to US which has a departure time of 6:48.
Will i have enough time to get back to the airport, return the rental car and board the flight ?!

Thanks for your time!!