Boeing unveiled a rendering of its first-ever design for a hypersonic passenger plane at an aerospace conference in Atlanta. While the idea and potential of the plane will generate plenty of buzz, this is a concept that is likely decades from being built.

The hypersonic passenger plane could, in theory, fly as fast as Mach 5, or just under 3,900 miles per hour. That would allow the plane to carry passengers between Los Angeles and Tokyo in roughly three hours. A flight from New York to London could be as quick as two hours. Right now, those flights take about 11 hours and 7 hours, respectively.

Boeing CEO Dennis Muilenburg is pushing the aerospace giant to explore the potential of ultra-fast passenger planes.

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