The problem with electric cars is almost from batteries. The biggest problem is that the drivig mileage is short. When electric cars first went on sale a few years ago, people could run about 100km after being fully charged. It has increased a lot now, so you can run about 400km after charging. If you can make the battery smaller and increase the ability, you will be able to increase the mileage than you are now. In a few years, I think there could be an electric car that can go 1,000km. Also, there are many charging stations for electric vehicles, but there is still a lot of shortage. People who use electric cars have become a habit of charging their cars every day like they always charge their phones. When traveling a long distance, you must look for the location of the electric vehicle charging station in advance and plan where to charge it.