German defense company Quantum Systems, a major supplier to Ukraine's frontline reconnaissance fleet, is developing an experimental electric drone capable of speeds over 650 km/h in horizontal flight. It uses bespoke battery cells from V4Smart GmbH, a Porsche AG subsidiary, and says the technology will feed development of a high-speed interceptor, Defense Express writes. Speed is the bottleneck for anti-drone interceptors. Russia's newest Shahed…