<http://schema.org/alternativeHeadline>
"The busy billionaire won't devote much energy the project, but hopes to get a subscale demonstration model off the ground soon."^^<http://www.w3.org/2001/XMLSchema#string>
<http://www.mnn.com/green-tech/transportation/stories/elon-musk-unveils-the-plans-for-the-superfast-hyperloop-rail>