In June, Tesla’s Supercharger network passed a charging milestone, delivering more than 1 GWh of energy to Model S vehicles in a single month. That energy accounts for a collective 3.7 million miles driven, 168,000 gallons of gas saved, and 4.2 million pounds of carbon dioxide offset. That’s like driving to the moon and back seven and a half times, and nixing a day’s worth of CO2 from 73,684 Americans.