&amp;lt;a href=&amp;quot;http://www.lockheedmartin.com/us/100years/stories/constellation.html&amp;quot; target=&amp;quot;_blank&amp;quot;&amp;gt;According to Lockheed Martin&amp;lt;/a&amp;gt;, the plane boasted features that were unheard of during its heyday, such as air conditioning, reclining seats and extra lavatories. Lockheed says the Super Connie was &amp;quot;at least twice as fuel efficient as the industry&amp;#39;s first jets and as efficient as many of today&amp;#39;s modern aircraft.&amp;quot;