Buffett on CNBC: "One railroad is enough" (when asked if he'd buy UNP). U.S. businesses are...

|By:, SA News Editor
Buffett on CNBC: "One railroad is enough" (when asked if he'd buy UNP). U.S. businesses are "doing a tick better." Residential real-estate has improved due to lack of houses, but CRE "is another story." Berkshire has $20B in cash left after the Burlington buy, for which he'll borrow $8B.