Are those trains going to be driven by humans?

2000 feet are 609.6 m, thus according to supahfly_remix max. 12000 kWh can be stored per train, 5.5 miles are going to take about 4 minutes to climb and another 4 minutes to descend, let's assume (from thin air) the usage is 3 times below its max, then a train will buy and sell (0.05 also taken mostly from thin air) 2.5/h * 12000 kWh * 0.05 USD/kWh = 1500 USD, which means that salary for the driver is going to be perhaps 2-4% (depending on whether fully driving, or just observing for safety).