Fran Crotty and Matthew Blackler charged an electric vehicle (EV) at the 36 Lyn Refuel Station at E. 36th Street and Lyndale Avenue S. in Minneapolis Friday. They were demonstrating the speed of direct-current charging and promoting the #24EVChallenge, a 24-hour effort Sunday to set a Guinness world record for charging cars. The marathon begins at the station at 2 p.m. Sunday and they hope to charge 100 EVs in a row, for 15 minutes each. Blackler founded ZEF Energy, a co-sponsor of the event. Crotty works for the Minnesota Pollution Control Agency. (The Minnesota Star Tribune)