Dee: BNSF and NS would be a good match in more ways than one. Also, they wouldn't have to change the name, as BNSF could then mean BN-NS-SF, and the NS cars could be restenciled by adding a B and F, although the numbers could be a problem. Has anyone in North America ever tried 7-digit numbers for freight cars?
Judging by the number of BNSF, and former BNSF lease units, in the NS's Big Sandy area, I sometimes wonder if they haven't already merged. Then a train comes by with CP, 2 CN, UP, BNSF, NS, and CSX. 7 units, 6 railroads, whose train is it? That's the only CSX unit I've seen on an NS train.