The hidden gem in this deal is the investment BNSF made in laying 24cnt fiber next to their track in continuous 4" pvc. I've always felt the decision to do that was a reflection on just how well-run the BN was as a company.
Large-scale packets on the rails, small-scale packets in the pipe.
Berkshire Hathaway doesn't just invest in well-run companies. It invests heavily in the management of well-run companies.