Paragraph 2
The United Airlines
will be the first supersonic jets to make
flights since 2003. The
of the tickets will be about the
as regular business class
. Previously, supersonic
cost over 20 times more than
class. Only the super-
could fly. The new planes will use less fuel and will be net-zero carbon. The cost of
airplane is around $200 million. Boom
has around $6 billion in orders.
