In a typical vehicle that's about 50kg of CO2. 100kg if it doesn't include the return leg.

Not having a dig at you, but this is a big part of our problem. We believe that because we can do something, we are entitled to do it. Not only that, but we've structured our society in such a way that it's actually necessary for people to do these harmful things just to get by like commuting distances that would have been considered absurd 100 years ago. They are still absurd.