A Boeing 747's top speed is listed at 614 mph. They're going to make a dirigible that goes 300? On solar power? I'm gonna take the "under" on that bet.
“A Boeing 747’s top speed is listed at 614 mph. They’re going to make a dirigible that goes 300? On solar power? I’m gonna take the “under” on that bet.”
It has two jet engines according to the photo in the article.