Raleigh-Durham, NCSergio Acero, 26, killed after his motorcycle crashes into a concrete manhole cover at a high rate of spree in Chapel Hill, North CarolinaAccident Date: Fri, 02/28/2014Officials don’t yet know how fast he was going, but 26-year-old Sergio Acero was riding his motorcycle fast enough around a curve to crash into a large concrete manhole cover.