It's a Drift HD170 video cam mounted on the helmet. I shoot full HD then crop shots and edit the colors, remove noise, etc. Yeah, LOTS of trucks! I ride through industrial Queens and Brooklyn, there are lots of manufacturing plants and warehouses around here, plus lots of through traffic to Manhattan. I know, I am very, very, very careful, never pass them when they look like turning, never squeeze between two moving trucks and generally keep my distance. That's how cyclists get killed around here. Although, the trucks are not as bad as cars since they can't accelerate or turn wildly like the cars do. I generally have little problems with trucks.