Suppose that data are stored on 8.54-Gbyte single-sided, double-layer DVDs that weigh 15 g each. Suppose that an Eurostar rail service train, London to Paris via Chunnel, carries 104 kg of these DVDs. The great circle distance of the line is 640 km and the traveling time is 2 hours, 15 minutes. What is the data transmission rate in bits per second of this system?