Society's energy needs are rising, urbanization is increasing and the consequences of climate change are becoming more apparent. Lightweight, sustainable and efficient vehicles can ensure individual mobility in the future. Our aim is to develop a scalable modular system for lightweight vehicles that are cost- and energy-efficient as well as sustainable. The sporty, emotional E-Jet is the first vehicle, from a range of exciting vehicles, to more than halve energy requirements compared to electric passenger cars while increasing fitness. A key point here is the serial human-hybrid drive in combination with innovative technologies in the chassis, aerodynamics and the overall concept, including lightweight construction and functional integrations.