Engineers and racing car enthusiasts making up 200 teams from 29 countries are gathering in Germany
for the Eco-Marathon, the world's biggest green car rally that rewards, not the fastest car, but the most fuel-efficient. Transport accounts for almost a quarter of Europe's emissions, and a third of its energy consumption.
SCROLL TO CONTINUE WITH CONTENT
Get our best delivered to your inbox.
"The target is 3,000 miles to the gallon," said John Caulderbank, course leader at the University of Central Lancashire.