You can go out and drive 500km (310 miles) right now, today, in an electric car that has been on the market for years. If you want to do it without charging, y

You can go out and drive 500km (310 miles) right now, today, in an electric car that has been on the market for years. If you want to do it without charging, you'll need to be careful with the use of climate control and speed. If you're happy to charge once (20-30mins) then it's utterly trivial. The restriction is not range - the restriction is cost. The electric cars that aren't just silly toys are still quite expensive.