Scaling up the production of graphene is the trick. Do that and all sorts of good things will happen.
Not to be negative.........but where is all the electricity going to come from to charge the plethora of electric cars the gaia worshippers foresee? They condemn power generation from coal, nuclear and the use of fracking to produce natural gas, is all of this charging electricity going to come from solar?
More tricks than that required to make supercaps work economically for the residential driver.
Would you like a car that loses half the energy stored in the "fuel tank" if it sets for a week?