The Toyota automotive plant in San Antonio, Texas is setting up a just-in-time inventory system with a component manufacturer in Saltillo, Mexico. The schedule for deliveries is weekly. Each delivery would fill at least three shipping containers. San Antonio is serviced by numbered highways and daily rail service via the Laredo rail line. It is also 230 kilometres (144 miles), an approximately two-hour drive from the port at Corpus Christi. With the given information, select the mode of transportation that would be the most efficient and cost-effective way to get the components to San Antonio, and explain why