Bicyclist, 27, killed joyriding in front of Met Museum  - NY Daily News A 27-year-old Bronx bike messenger was killed in front of a Manhattan museum as he was joyriding while holding onto the back of a commercial truck, police said. Daniel Martinez was riding south on Fifth Avenue near E. 83rd Street around 6:30 p.m. when he grabbed onto the rear of a Ford F55, cops said. When the vehicle cam…