Sheffield is the last big UK city without electrified train line - how have we gone backwards?

Sheffield is the last big city in the country without an electrified line of any sort - but why?

Robotaxis are on the road to London. Cabbies, who pass a grueling test, aren't about to hand over their keys.

London black cab drivers, who are required to memorize thousands of streets to get their license, are being tested in a new ...