BARCELONA, Spain (AP) — The Barcelona subway grinds to a halt, the doors slide open and commuters pour out to go about their daily business. Little do they know that as they do so, a burst of energy ...

BARCELONA, Spain — The Barcelona subway grinds to a halt, the doors slide open and commuters pour out to go about their daily business. Little do they know that as they do so, a burst of energy is ...

This is an archived article and the information in the article may be outdated. Please look at the time stamp on the story to see when it was last updated. BARCELONA, Spain (AP) — The Barcelona subway ...

BARCELONA, Spain (AP) — Barcelona’s subway system is using regenerative braking to help power both its convoys but also recharge electric cars at street level. Sixteen subway stations in the Spanish ...