Mont Tremblant is definitely NOT 2.5 hours drive away from Montreal (as claimed in that news story); it's about 120km, along mainly autoroute (=motorway). I can't see any reason an ambulance couldn't average something like 100kph. (I'm sure there are Montrealers routinely exceeding that along that stretch without the benefit of sirens and lights).
The best case I can make for 2.5 hours is a RETURN trip, and if they sent an ambulance FROM Montreal to go bring here back .... that's an obvious case for improvement that doesn't require a helicopter.