The Audi S2 is one seriously cool car. Not only was it the first car in the S series from Audi, but it offered thrilling performance for the day thanks to a punchy 2.2-liter turbocharged five-cylinder ...
Innovators gear up work on ‘green’ hydrogen plane with plans for nonstop 9-day trip around Earth
Swiss aviation pioneer Bertrand Piccard is developing a plane powered by liquid hydrogen after a much-hyped flight in 2015 ...
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