Trancorp currently transports all its goods to Burland Island by truck. The only bridge over the channel separating Burland from the mainland is congested, and trucks typically spend hours in traffic. Trains can reach the channel more quickly than trucks, and freight cars can be transported to Burland by barges that typically cross the channel in an hour. Therefore, to reduce shipping time, Trancorp plans to switch to trains and barges to transport goods to Burland.Which of the following, if true, casts most serious doubt on whether Trancorp's plan will succeed?
【选项】It does not cost significantly more to transport goods to Burland by truck than it does to transport goods by train and barge.