Will cars still be a dominant form of personal transportation in 2050?

Will the majority of new passenger aircraft sold in 2050 be hydrogen fueled?

Will hydrogen cars be more popular than electric cars in 2030 in the first world?

What decade will US air travel be more than 50% sustainably fueled? Hydrogen/renewable fuels/electric

Which of the following "colors" of hydrogen will be the cheapest by 2030? [details in description]

What power source will replace diesel for long-haul trucking by 2030?

Will humanity get its hydrocarbon energy via solar-powered hydrocarbon synthesis in the next 20 years (ie by 2035)

What proportion new car/suv/light truck sales will be hydrogen powered in 2030?

Will China be the leading producer of green hydrogen in 2030?

Will the DOE Hydrogen Shot Succeed in Reducing the Price of Renewable Hydrogen to $1/kg by 2030?