Noun
Someone who follows a slipstream ("the low-pressure zone immediately following a rapidly moving object, caused by turbulence").
(figuratively) Someone who goes with the flow; someone who follows with what others are doing.
Antonym: contrarian
(motor racing) A race in which the shape of the track causes extensive slipstreams to form behind each car.
(literature) Someone who writes slipstream fiction ("a genre of fantastic or non-realistic fiction that crosses conventional genre boundaries").
Source: en.wiktionary.org