This was our electrified vision of the future – back in 1995. The concept vehicle Environmental Concept Bus (ECB) was a series hybrid powered by a gas turbine with an integrated high-speed generator, electric motor and batteries. The electric, emission-free range was five kilometres, and the nitrogen oxide and particle emissions were very low compared to a bus with a diesel engine. By developing the ECB, we wanted to show the bus’s potential as a sustainable, safe and flexible alternative for pu