Solar Impulse 2 cruised at altitudes of up to 9,000 meters and at an average speed of between 45 and 90 km (12.5 and 25 miles) per hour.The potential of 'clean energy aviation' eludes me....
Solar Impulse 2 cruised at altitudes of up to 9,000 meters and at an average speed of between 45 and 90 km (12.5 and 25 miles) per hour.The potential of 'clean energy aviation' eludes me....
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