Yes, absolutely. Obviously per kilometre per passenger, public transit is far more efficient than the private automobile is by a factor of many times. But again, that assumes that you have the density. In Toronto, Montreal, and Vancouver, it is far more efficient per passenger per kilometre to use public transit. As you get into the smaller areas, that tends to be harder because you don't have a natural catchment area to get those passengers. So yes, it's far more efficient.
On September 28th, 2011. See this statement in context.