About the article:
It's hard to give credibility to the author when he doesn't know the plural for "vortex". The description of the wake (one up, one down) is outrageously wrong.
The concept of formation flying is well known. Another aircraft's wake is an extremely dangerous, if attractive, place to fly in. It'll take years before airliners do it.
About cars:
Indeed. Already I'd love to have an instrument giving me the time separation to the car in front - it'd be a good start to measuring safety margins when drafting.
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