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Toyota says it has reduced the cost of fuel cells significantly enough to sell hydrogen cars for under $100,000.
Falling costs are making fuel-cell vehicles look like a plausible alternative to conventional cars.
Sensors in cars today could do more to reduce traffic accidents, and costs are coming down.
With security, reliability, and legal issues yet to be resolved, the first self-driving vehicles will perform only specific tasks.
The carmaker discusses research that could make cars autonomous and eliminate traffic fatalities.
Magnesium-ion batteries promise to be cheaper and more energy-dense than lithium-ion ones.