While the law treats a SS bike the same as an 18-wheeler, you are still more maneuverable, so it saves you a bit of time. Definitely shorter commutes for me from southern e-dot to richman's hill, which is across and up/down Toronto (as bad as it gets). Definitely saved on fuel and the comfort factor wasn't too bad.. However, I had flex time, so I was working 10:30-18:30, thus avoiding the worst of the rush hour traffic.