One interesting thought came to my mind after seeing a picture just now. Now that the trains have 5 digit nos. it may sometimes happen that the train and loco no. may be the same. Eg. If SRC WAP 4 22893 is powering 22893 SNSI HWH SF..both the nos. will match i.e. the train no. and loco no. If anyone has observed such instances please share. Pictures will be even more delightful.