Alex Blacio is third Chicago teen killed on electric scooter this year, safety concerns growA 16-year-old boy, Alex Blacio, riding an electric scooter was killed in a crash Monday on North Western Avenue in North Center, Chicago police said. A 16-year-old boy, Alex Blacio, riding an electric scooter was killed in a crash Monday on North Western Avenue in North Center, Chicago police said. A 16-year-old boy, Alex Blacio, riding an electric scooter was killed in a crash Monday on North Western Avenue in North Center, Chicago police said. A 16-year-old boy, Alex Blacio, riding an electric scooter was killed in a crash Monday on North Western Avenue in North Center, Chicago police said. CHICAGO (WLS) -- A 16-year-old boy riding an electric scooter was killed in a crash on the North Side Monday afternoon, Chicago police said.