A man riding a Harley-Davidson motorcycle was killed in a crash Saturday in Lake County. The 57-year-old Sanford man was riding a 2020 Harley Davidson FXLRS at 5:03 p.m. Saturday southbound on State Road 44 at Bottany Woods Drive in Eustis when he failed to negotiate a curve, ran off the roadway and collided with a concrete mailbox, according to an accident report from the Florida Highway Patrol.