A public message to the US Secretary of Energy, Jennifer Granholm (I hope she can receive this message):
The context of this message is the movement currently being discussed in the US called 100% electric cars by 2035 or 2050.
My point is that 100% electric cars is an impossible goal. Obviously, those who advocate 100% electric cars have good intentions to cure climate change, which is definitely a severe problem. However, they may not know that although electric motors have a higher efficiency (around 90%) than internal combustion engines (ICEs) (around 30%), the energy density of gasoline (about 12,200 Wh/kg or 9,700 Wh/L) is more than 40 times greater in weight and 10 times greater in volume than that of the best rechargeable batteries (200-300 Wh/kg or 400-500 Wh/L). This is why gasoline-powered cars have a longer range. It is also much quicker to refuel with gasoline (around 5 minutes) than to recharge batteries (more than 30 minutes).