I read a bit about the CPR history and at one point the Northern Michigan route was favoured. I always tought that CPR involvment with the Soo was kinda selfish , my feeling is that CPR kept Soo Line going for its own purpose either to, as I proposed use the southern route as a shortcut or just to have an alternate route should they have problems on their own main line. I also figured that owning an american Railroad gave CP an entry to the US shipping market.