The Tesla battery pack weighs over 1000lbs, but only carries the same energy as 3 gallons of gas.
Average Tesla can do nearly 300 miles per charge. A gallon of gas can do about 30 miles per gallon in a similar sedan.
A Tesla gets ~130 mpg equivalent [1]. This means that if you put a gallon of gas worth of electricity into a tesla, the Tesla can go 130 miles.
On that same page you can see the Tesla is rated for ~350 miles of range. So the Tesla battery pack carries less energy than 3 gallons of gas.
Let's phrase it this way: if you had a 100% efficient generator, you would need less than 3 gallons of gas to fully charge a 1000lb Tesla battery pack. The Tesla could then travel 350 miles with that energy.
[1] https://www.fueleconomy.gov/feg/Find.do?action=sbs&id=43401
A Tesla long range battery is 82 kWh.
A gallon of gas is ~33.7 kWh.
So even in a Tesla, 1 mile of driving = 1 hour of gaming = it's not worth talking about gaming as a cause of global warming.
That is why many of the world's railways run on electricity, at least on the main lines: it costs something to set up all the catenary wires etc., but the operational savings are huge.