In the last 10 years CN shrank their GP40-2LW/GP40-2W fleet from ~280 to about 60. Hence these engines are now rare. I've only seen them three times this year and I railfan the CN main fairly often. Statistically the IC SD40 series (SD40-2/SD40-3/SD40-2R etc.) is twce as common in the area.
Suprisingly this unit is in fairly good shape, not much rust or primer showing compared to most of the remaining GP40-2LW fleet, even the ones painted in CN's NA sheme. Providing CN doesn't find new 4-axle power soon, I won't be suprised if he outlives the SD40-2W behind him, as they're being retired now as well, with all the new GEVO's and SD70M-2's arriving.