i cook a decent amount, because it's easier to get bulk stuff that fits in my combo pannier-backpack from the grocers, than say frozen pizzas or boxes of cereal. even eggs seem to have less spoilage due to transport by bike than via car!

i live in Minneapolis, so when it's hot i just take it a little easier so as to not work up a sweat, and in the winter biking is shockingly warming (i am consistently surprised to be able to bike in subzero temps with my normal jacket, jeans and long underwear on)

as for automobile drivers, it's kinda a combo of defensive driving tactics, along with knowing bike lanes, bike boulevards, and parkways. (bryant ave and the midtown greenway are pretty nifty for all cardinal directions of travel)