First Drive Of Gumpert Plug-In, Alcohol Fuel Cell Supercar   2018/01 Comparative Analysis of Infrastructures: Hydrogen Fueling and Electric Charging of Vehicles (pdf, Energy & Umwelt Band 408 ISBN 978-3-95806-295-5)   Investor Day – Hydrogen: ready to scale .. Major technology progress has been achieved in the last 10 years with costs reduced by a factor of 20 over the period .. additional cost decrease in coming years.   Timeline of hydrogen Technologies: