Paragraph 1
There could be
passenger planes this
. Supersonic means
than the speed of sound,
is 1,234kph. United Airlines will buy 15 supersonic
. The planes will fly up to 88 business
passengers and have a top
of 2,099kph. Most
airplanes fly at around 1,000kph. The new planes will cut the
it takes to fly from London to New York from around 7 1/2 hours to less than four
.