1. Department of Chemical Engineering, Imperial College London, London SW7 2AZ, UK
2. Department of Earth Science Engineering, Imperial College London, London SW7 2AZ, UK
3. Beta Research and Development Ltd., Derby, DE24 9GN, UK
4. Energy Technology Services, Stratford on Avon, CV37 OSZ, UK
5. MIRA Ltd., Nuneaton, CV10 0YU, UK
6. Modec Vehicles, Coventry, CV5 9QE, UK