The crossword solution for the term 'GO SUPERFAST' is TEAR. This is an acronym for 'Thrust, Efficient, Aerodynamic, Research', which is a type of aircraft designed to fly at high speeds. The TEAR aircraft was developed by the United States Air Force in the 1950s and has since been used in various military and civilian applications. It is capable of reaching speeds of up to Mach 3, making it one of the fastest aircraft in the world.