Final answer:
President Johnson views America's transportation system as inadequate and problematic, requiring urgent reform to cope with the doubling demand anticipated in the coming two decades. The correct statement is America's transportation system is flawed and problematic.
Step-by-step explanation:
President Johnson's overall viewpoint in the passage indicates that America's transportation system is flawed and problematic. He acknowledges the greatness of past accomplishments in transportation infrastructure but paints a current picture of inadequate systems in the face of increasing demand.
Emphasizing the need to confront current issues such as traffic jams, safety abuses, and inadequate old equipment, he foresees that the challenges are only set to grow as the demand for transportation more than doubles in the next two decades. Thus, it is clear that he sees a pressing need for reform in order to maintain and improve America's transportation network.