I don’t get out much these days since I am hard at work on the second book of Bicyclopolis. When I do venture outside on my bicycle, a motorist invariably finds my presence on the road irritating enough to yell at me. Their comments are often a variation on the theme of “bicyclists are irresponsible.” To answer that supposition, I post this week’s Roadkill Bill comic about how cars create massive amounts of climate-warming, ocean-killing carbon dioxide. Enjoy: