CN 346 and a number of other 300 series manifests have been running with DPU lately, just like CP with their potash trains. I'm not 100% sure this is 346 though, since that train showed up later, so perhaps this is 304?
Either way a very impressive consist. Not sure if this is better then a 201 car conventional monster I've seen last year (same lenght)
3:25pm CN 346?, 157 cars: CN 2242 (web) mid-train cars 120-121
CN 2266-BCOL 4610 (web-BCOL tri-colour) leading
6 boxcars, 8 flats with pipes (3 pipes tall), followed by 2 bulkheads with smaller pipes (63 each), 100 center-beams (74+8+7 cut), 3 covered gondolas, gondola, 4 hoppers, 33 tankers (17+7 cuts)