I read somewhere that the world could compensate for the greenhouse effect by simply painting all the roads white. It is an intriguing idea but that would be a huge job, and perhaps it would be more feasible to paint the roofs white in tropical areas, but that lead me to another idea: Most of the cars travel the paved roads, so instead of worrying how to store tremendous amounts of electrical energy in batteries on wheels which per se represent an environmental hazard, why don’t governments worry how to “wire” the pavements so that the electric cars can use and buy as much cheap electricity as they need while they drive? This could be done either in the same fashion like the trains use their electric grids, or wirelessly by electromagnetic induction from a powered long coil or conductor placed under/inside the pavement, so there’s no danger for anybody with the primary coil in the pavement and the secondary located at the bottom of the vehicle and being powered only while the vehicle moves. This could be furthermore improved by also placing braking coils everywhere so the kinetic energy gets converted back into electricity and goes back into the grid, and it would be most beneficial on long and steep slopes to power the vehicles going up in opposite direction, but people brake everywhere and it shoud be eventually feasible to gradually place the energy transformers and absorbers throughout the entire road system… worldwide. Imagine how much lighter the electric cars would be with less batteries for shorter autonomous rides and how much gas/coal and energy this would save in the long run. One could even sell adapting kits for the existing vehicles – the transformer and the electromotors, while they could still keep the gas engine for remote areas.