GENEVA — A new electric bus system developed by researchers at the Swiss Federal Institute of Technology makes it possible to charge up a battery in 15 seconds — quickly enough that if the chargers are set up at bus stops, the battery can refill while passengers are getting on, Fast Company reported.

When the bus pulls up to a stop, a battery on the rooftop automatically jumps up to the overhead charger, hooks in, and charges. After the first bus was tested in Geneva, the city committed to replace an entire line with the technology, according to the report.

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