In the last five years 25 European research institutions have joint forces to develop a rechargeable battery which uses lithium nano-particles.

The research team has redesigned the batteries which are now also able to store energy during braking and releasing it quickly during acceleration.

Together the engineers worked on the fuel cell propulsion system by upgrading the air supply, integrating a humidification system, redesigning the hydrogen supply line and developing a hydrogen sensor concept.

The new composite material contains double the volume of glass fibres compared to common composites and thus is extremely stabile.

The cars today - even in their basic configuration - are equipped with many features: air conditioning, electric windows and airbags for example. The price for improved comfort and safety on board has been an increase in weight.