Mercedes-Benz Vision EQXX electric concept car drove 746 miles on single charge

After traveling 626 miles on a single charge earlier this year, the Mercedes-Benz Vision EQXX concept has broken its own record with a 1,202-kilometer (746-mile) dash between Stuttgart, Germany, and Silverstone, England. During the trip, the Vision EQXX averaged energy consumption of 7.5 miles per kwh, Mercedes said Thursday in a press release…