Ontario Highway Traffic Act

“power-assisted bicycle” means,

(a) a pedal-driven bicycle of conventional exposed fork-and-frame bicycle design and appearance that does not resemble a motor scooter or motorcycle and that,

(i) has two or three wheels,

(ii) is fitted at all times with pedals that are always operable to propel the bicycle,

(iii) is capable at all times of being propelled on level ground solely by using muscular power to operate the pedals,

(iv) has steering handlebars,

(v) has wheels that have a width of not less than 35 millimetres and a diameter of not less than 350 millimetres,

(vi) has one or more electric motors that, singly or in combination, have a continuous rated output power not exceeding 500 watts and that is incapable of providing propulsion assistance when the bicycle attains a speed of 32 kilometres per hour or more, and

(vii) weighs not more than 55 kilograms,

(b) a vehicle that has the appearance of a motor scooter, with a seat and an open frame that may be stepped through and a platform on which the rider’s feet may rest and that,

(i) meets the description in subclauses (a) (i) to (vi), and

(ii) weighs not more than 120 kilograms,

(c) a vehicle that has the appearance of a motorcycle, with a saddle designed to be straddled and a footrest, pedals or pegs where the rider’s feet may remain secure, and that meets the description in subclauses (b) (i) and (ii); (“bicyclette assistée”)

The bike you listed says 750W peak, not continuous, so its probably legal. But truthfully, I don't think anyone would give a shit either way.