You just have visible instead of invisible emissions. But, don't kid yourself, a car driver doing what you do has about the same number of drive-thru wrappers & teriyaki clamshells lining the floorboards. They do leave the invisible emission behind that you don't, and they keep a lot more of that teriyaki in the form of insulation. Each year, it grows a little more. Both of you are needed...for now.