#Inktober2017 #MyOneAndOnlyPlanet Day 17. BIKE. The main problem with cars is that there are too many of them on the roads daily and they are significant contributors to greenhouse gas emmissions. If you can, please carpool to work or take public transport. If you can, ride a bike. (Or maybe carpool on a bike? This can't be safe, guys). Or, if you can, work from home one day a week.