1.0CAFE Foundation Bloghttp://cafe.foundation/blogDean Siglerhttp://cafe.foundation/blog/author/admin/rich600338<blockquote class="wp-embedded-content" data-secret="EVCZoAqvNK"><a href="http://cafe.foundation/blog/airliners-get-better-mileage-than-cars/">Airliners Get Better Mileage than Cars, and Trains do Even Better</a></blockquote><iframe sandbox="allow-scripts" security="restricted" src="http://cafe.foundation/blog/airliners-get-better-mileage-than-cars/embed/#?secret=EVCZoAqvNK" width="600" height="338" title="“Airliners Get Better Mileage than Cars, and Trains do Even Better” — CAFE Foundation Blog" data-secret="EVCZoAqvNK" frameborder="0" marginwidth="0" marginheight="0" scrolling="no" class="wp-embedded-content"></iframe><script> /*! This file is auto-generated */ !function(d,l){"use strict";l.querySelector&&d.addEventListener&&"undefined"!=typeof URL&&(d.wp=d.wp||{},d.wp.receiveEmbedMessage||(d.wp.receiveEmbedMessage=function(e){var t=e.data;if((t||t.secret||t.message||t.value)&&!/[^a-zA-Z0-9]/.test(t.secret)){for(var s,r,n,a=l.querySelectorAll('iframe[data-secret="'+t.secret+'"]'),o=l.querySelectorAll('blockquote[data-secret="'+t.secret+'"]'),c=new RegExp("^https?:$","i"),i=0;i<o.length;i++)o[i].style.display="none";for(i=0;i<a.length;i++)s=a[i],e.source===s.contentWindow&&(s.removeAttribute("style"),"height"===t.message?(1e3<(r=parseInt(t.value,10))?r=1e3:~~r<200&&(r=200),s.height=r):"link"===t.message&&(r=new URL(s.getAttribute("src")),n=new URL(t.value),c.test(n.protocol))&&n.host===r.host&&l.activeElement===s&&(d.top.location.href=t.value))}},d.addEventListener("message",d.wp.receiveEmbedMessage,!1),l.addEventListener("DOMContentLoaded",function(){for(var e,t,s=l.querySelectorAll("iframe.wp-embedded-content"),r=0;r<s.length;r++)(t=(e=s[r]).getAttribute("data-secret"))||(t=Math.random().toString(36).substring(2,12),e.src+="#?secret="+t,e.setAttribute("data-secret",t)),e.contentWindow.postMessage({message:"ready",secret:t},"*")},!1)))}(window,document); //# sourceURL=http://cafe.foundation/blog/wp-includes/js/wp-embed.min.js </script> Airliners beat cars in fuel economy, especially on longer trips.  That would not be news to attendees at recent Electric Aircraft Symposia, where speakers like Ilan Kroo, Stanford University professor and aircraft designer, have brought that message home. One of Kroo’s slides, shown below in a 2009 lecture (It’s nearly an hour, but worth a look […]http://cafe.foundation/blog/wp-content/uploads/2014/01/Sivak-energy-efficiency-chart-528x384.png