The ability to develop and carry out a scheme energetically; enterprise, initiative; drive, ambition.
In the United Kingdom chiefly associated with the administration of Prime Minister David Lloyd George (1863–1945).
Of a motorized toy car, etc.: having a mechanism that stores the momentum generated by a preliminary push and then releases it to produce forward motion.
Late 19th century; earliest use found in The New York Times. Partly from push + and + go, and partly from push + and + go.