The $$Dino Dig, Inc.$$ gas company has discovered large oil deposits in North Dakota over the last three years. With money from its company profits, it purchases controlling shares and equipment in a truck transportation company and a railroad transportation company. Both of the companies continue to operate under their original names, but now $$Dino Dig, Inc.$$ uses its newly obtained assets to more efficiently and cheaply transport its crude oil around the country. Dino Dig, Inc. is great at $\_\_\_\_\_\_\_\_.$