Early start this morning. Had to pull over once to wipe condensation off mirrors, sunnies and visor. A bit later we enter a patch of actual fog. Had to pull over again to take off specs and continue with visor up. Pulled back on to the hwy behind a quarry truck and had dirt in my eyes till the fog cleared! Who'd be stuck in a cage, eh! How to stop fogging up? How to handle fog? All advice welcome.