Plots 1. Price of fuel over time 2. Carbon emission
 

Is it possible to add some of the following graphs?
1. Plot the price of fuel per gallon over time
2. Number of tonnes of carbon dumped into the atmosphere based on the fuel consumption (possibly carbon dumped per mile or 100 miles ). 1 gallon of gasoline produces 8.8 kg (19.4 lbs) of carbon dioxide into atmosphere.

If you dump ~8.8 kg of carbon dioxide into the atmosphere, how much carbon are you placing there? (i.e., if you place 1 tonne of carbon dioxide into the atmosphere, what part of a tonne of carbon are you placing into the atmosphere?)