Slipstreamer

He headed the leading group over the col, class riders every one, no wheel-suckers keeping the shade of the men doing the work. 'Never gets a tan', they say of the slipstreamers.

Source: wiktionary

Slipstreaming athletes save energy—at the speeds involved in cycling, energy savings can be 33% or more. Obviously the slipstreamer cannot go faster than the leading rider, but if the leader is a powered vehicle capable of great speed then the slipstreaming rider can go correspondingly fast.

Source: wiktionary

Even though horses are racing, they can spot things and that's why they put blinkers on so they can focus better. The best thing is to get your horse in the slipstream of the leader. It's a bit like cycling with its pacemakers and its slipstreamers.

Source: wiktionary

Men are slipstreamers, David. Did you ever see a car follow close behind a big truck to take advantage of the windbreak to make the driving easier? That's the way people are. They'll follow so close they can't see six inches beyond their noses, as long as it makes things easier. And the schools and the teachers are the biggest windbreaks of all.

Source: wiktionary