Today’s Solutions: January 22, 2025

A self-driving train that runs on virtual tracks has officially hit the streets of Zhuzhou in China’s Hunan Province. The autonomous train requires no tracks, and could ease emissions and traffic for a fraction of the cost of building a subway or streetcar system. The 100 percent electric train can transport as many as 300 passengers in three carriages through cities at speeds of 43 miles per hour.

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