as fast as possible: He was driving at full speed down the motorway when it happened. Fast and rapid. a mile a minute idiom.

What is the meaning of top speed?

When you are going as fast as you can (eg; in a car), it's at its maximum or its top speed. It can't go any faster.

Who says full speed ahead?

WASHINGTON - David Glasgow Farragut was the U.S. Navy's first full admiral. At the time of his death in 1870, Farragut had served a total of 59 years in uniform. Two separate classes of destroyers and five total U.S. Navy ships have been named in his honor.