That's insane, I didn't realize it was that much. If we could see cars drop carbon turds on the road instead of venting it invisibly in the air we'd all be freaking out right now.
There's a reason all the old buildings in big cities are elevated a few steps above street level...
Also ... CO² is bad ... but at least is non-toxic compared to some of the other side products.
So... Only about one chocolate bar per km.