German electrical car with a range of more than 600 km

It's not first of April, so maybe it's true. Apparently German companies (lekker engery, DBM energy) built an electrical car that can go more than 600 km (they did 605 km to prove this) and can be recharged within an hour (or in 5 minutes under optimal conditions). The technology used for the battery is new and is based on lithium metal polymer structures. The whole battery weighs only 100 kg. The car used is an almost vintage Audi A2 and still offers seats for 4 people and space for the luggage. This almost sounds like a miracle! Sadly enough the battery technology is not yet production ready and of course many questions can be raised. But if eventually something like this can be manufactured in large numbers then this provides interesting parameters for the design of future cars! Think about small electrical motors, relatively small and light batteries. Let's see!