Test flights of a driverless hover-taxi will take place in Singapore next year, a German aviation firm said, the latest innovation to offer an escape from Asia's monster traffic jams. Millions of commuters in the region's cities have to contend with chronic gridlock every day, sparking a race to develop new ways to avoid the snarl-ups. While the developed city-state of Singapore does not suffer major congestion, it is seen as a perfect test-bed for new technologies due to its compact size and openness to innovation. German firm Volocopter said Tuesday it will conduct the test flights in Singapore in...