That proves that my fear of following some trucks with loads of things (logs, tools, garbage, even gravel) and getting smacked in the face with loose/fallen objects. I'm always paranoid following such trucks and I try to pass them ASAP (or fall way back but then the problem usually just re-appears). When I lived in Houston, Tx. the freeways there were very dirty and the added risk was illegals in old pick-ups and freeway garbage being kicked up in your face. Yikes..