Downtown Toronto like many busy downtowns I imagine you can get to work/school in rush hour quicker or just as fast as by car/bus.
IF you're downtown or near it, maybe, and IF its a nice day out, not raining or snowing or 40 degrees with the humidity.
And the traffic in downtown Toronto is bad by design. It's called road diets, made to make driving slow and unpleasant so people take public transit instead.