If there's one street in Ottawa that woulkd benefit from a dedicated streetcar line, it's Bank. In fact, I'd make Bank a streetcar/transit only zone from Wellington all the way down to Gladstone.

Stupidest thing Ottawa (and many other towns and cities) ever did was to ditch streetcars in favour of buses. Of course, they were dealing with a consortium of multinationals that 'wanted it that way'.