If one accepts that Virgin's combination of plane and spacecraft qualifies, then Clarke could posthumously prove to be right.
From the economist.com
Transcontinental, the bigger of the two, had the marquee expertise of Charles Lindbergh and was already offering a 48-hour combination of plane and train trip across the United States.
From the en.wikipedia.org
Every harvest surgeon arrives at the donor hospital with an ice-filled cooler, often having traveled late into the night via some combination of plane or helicopter or ambulance.
From the well.blogs.nytimes.com
A parallel combination of a line and a plane may be located in the same three-dimensional space.
From the en.wikipedia.org
In architecture, flushwork is the decorative combination on the same flat plane of flint and ashlar stone.
From the en.wikipedia.org
Thomson Airways flew passengers to Lanzarote in a plane using a combination of used cooking oil and regular jet fuel.
From the telegraph.co.uk
The result is a daring combination of a 30-minute heart-stopping plane crash chronicle mixed with a poignant story of addiction and redemption.
From the latimes.com
The latter two explosives were the same combination with which Reid attempted to blow up an American-bound plane from Paris in December 2001.
From the telegraph.co.uk
Have enough of that electrical combination and you'll be strapping on your Pumas and taking off to Africa without a plane.