Walking with Superman: Day 245

Superman's in Baltimore, MD, where the Department of Transportation is opening a new cross-country high-speed railway. The hi-tech passenger train can make the trip from coast to coast in a matter of hours, using environmentally-friendly fuel and ferrying more passengers than even the largest jumbo jet. But as the train lurches out of the station for its inaugural voyage and speeds past its first scheduled stop, accelerating all the way, it's clear that something has gone terribly wrong! The ransom demands come quickly: Epoch, the Lord of Time, has sabotaged the train, attaching to it a chronal generator. The faster and farther the train travels, the more of a tachyon charge it will build, until it crashes at the end of the line in San Francisco, causing a detonation that will explode at every point in time, irrevocably altering the past and future! While the government scrambles to meet Epoch's demands, the Man of Steel speeds along the track to find a way to stop this runaway train. But this is one locomotive that may prove even more powerful than Superman!