Union Pacific is in talks to merge with Norfolk Southern, The Wall Street Journal reported Thursday, in a deal that would shake up the railroad business in America. The Journal cited people familiar with the matter.

Two railroad companies could be trying to put a deal into loco-“motion.” Union Pacific and Norfolk Southern have started to examine the possibility of a merger, according to a report from the Wall Street Journal,

Union Pacific , the largest U.S. freight railroad operator, is exploring a possible acquisition of Norfolk Southern to create a $200 billion coast-to-coast rail network, a person familiar with the matter said.