Why Does the US Not Have Supersonic ASMs?
ASM = Anti-Ship Missile. An interesting look into missile design and behaviors across the globe. From YT: Russia has got them... so does Japan, India, Taiwan, and others. So why doesn't the US?
How does a whip break the sound barrier?
Some American cities use buses, or trams, or trains. Peachtree City, Georgia, has a different solution: it's not quite public transit, but a hundred miles of golf cart tracks helps to keep cars off the road.