- Elon Musk's Hyperloop project isn't totally crazy. It's still somewhat crazy, but there are some people building a prototype now -- so a working version might exist someday. [url]
- SpaceLiner is a suborbital, hypersonic, winged passenger transport concept that could take people from Europe to the US in about an hour. Flying on what is essentially an intercontinental missile probably has some additional security issues, but there are plenty of other practical problems for this transportation idea. [url]
- Other evacuated tube transport systems (aka vactrains) could travel 5,000 mph all over the globe. That is, if anyone wants to build the tubes across oceans.... And maybe China will do it. (Or maybe not.) [url]
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