start by drinking about 20 oz of gator-aide on the way to starting point while in the car. then for rides up to 30 miles sip on 1 bottle of water on first half, then 1 of gator-aide on second half of ride. sips of two or three swallows every 5 to 10 minutes will empty two bottles on 30-mile ride. Usually stop at least once on short rides like that to stretch calves a bit and re-arrange bottles so the full one is easier to get at and put the empty on lowest rack.
rides of 30 to 50 miles take the 2-liter camel back and three bottles in racks; especially if it is hot out. Use camel back and water to around half way point as before and then gator aide & water for rest of ride. sipping about same rate as for short rides.
never even consider food on a ride less than 50 and have not done one over that yet. usually have a granola or energy bar about 30 to 40 minutes prior to riding though and sometimes have some fruit waiting for me in the car when I'm done.