Fully Charged, based on Union of Concerned Scientists data, explains why electric cars are NOT dirty.
As an example, Fully Charged references the Tesla Model S, which uses 20 kWh of energy for some 100 km (62 miles) and a petrol car, which needs 10 l of fuel (97 kWh).
"This is an experimental video we made to put on the Fully Charged Facebook page. I've been learning that on Facebook, super short with text is a good idea.
So this is super short, with text. Many people have suggested we post it here too.
The figures come from many places, actual sceintific, peer reviewed academic papers. The main source is here: