A Union Pacific powered Canadian National (former GTW) train pulls through a rural Michigan town. Foreign power on the CN is not uncommon. Many railroads share or borrow "power" when needed.
UP locomotives are some of the most brilliantly painted and well kept in North America. BNSF would follow closely to colorful locomotive paint schemes. Railroad locomotives are often their "billboard" and shabby looking locomotive can often reflect on the state of the railroad to the casual observer.
This CN locomotive (GP40-2w) clearly shows its weather worn paint job compared to the Grand Trunk Western loco trailing it.