Oh yeah, what do we do?
I sometimes just stop at a servo and buy chewy lollies for the glucose, and chips for the salt.
Sometimes i buy cheap loillies like musk sticks from Safeway. On top of this I just take water; I don't like getting rippid off with all those gels, sports drinks and sports bars.
But having said ALL THAT, even in summer I'll rarely ride for more than three hours.