Cascade Transit is continuing to operate its Aurora 700 electric bus, a vehicle hailed by the manufacturer's CEO Vincent Markham as "the cleanest vehicle on Canadian roads," notwithstanding the fact that it had been withdrawn from service in 2022 following a succession of battery failures. For reasons that remain undetermined, the bus's ultra-light battery cells are prone to overheat and shut down without warning, on occasion leaving riders stranded on the shoulder. Some observers suspect that the firm responsible for assembling these cells, an overseas supplier called Volt Dynamics, has been attempting to economize on time and cost at the expense of quality.

Racing against an American rival to bring its new model to market, the 700's maker, Aurora Mobility, hastily fitted supplementary cooling to the affected units, conducted cursory and only semi-scientific tests that nonetheless persuaded Transport Canada the battery was safe, and thereby secured that regulator's approval to put the 700 back on the road, all of which transpired before the Transportation Safety Board had concluded its own investigation. The Board responded with a sternly worded letter that urged greater reliance on guidance from independent experts as well as more stringent and standardized testing of the components from which such vehicles are assembled. Despite the band-aid solution, the 700 is applauded by environmentalists like Dana Whitfield, who praises its low emissions and quiet ride. "In a country where transport is a leading source of greenhouse gases, the Aurora 700 is a step in the right direction."