SR-71 Blackbird

The Hill Aerospace Museum has a large collection of aircraft. One of the most impressive is a Lockheed SR-71 Blackbird:

Los Angeles to Washington, D.C. in just over an hour:

Lockheed Martin’s page on Creating The Blackbird outlines some of the challenges:

Zipping across the sky at 3,000 feet per second, the rules of navigation needed be rewritten. Visual references for conventional flying—highways, rivers, and metropolitan areas—were rendered obsolete, giving way to mountain ranges, coast lines, and large bodies of water.

One peculiar design attribute, it leaks fuel when on the ground.