Question: What does the driver do in Tug of War?
About the article "Tug of war", section "Tactics".

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Tug of war is a sport that directly puts two teams against each other in a test of strength and stamina.
Tug of war may also refer to:  "Tug of War" (Paul McCartney album), released by Paul McCartney in 1982 * "Tug of War" (song), the title track of the 1982 album  "Tug of War", a song by Ratt from the album "Ratt" released in 1999  "Tug of War" (Enchant album), released in 2003  "Tug-O-War", a song by Chevelle from their 2004 album "This Type of Thinking (Could Do Us In)"  "Tug of War" (Carly Rae Jepsen album), released in 2008  "Tug of War" (Upstairs, Downstairs), an episode of the television series "Upstairs, Downstairs"  Tug-o-War (Gladiators), an athletic event in the television series "Gladiators"  Tug-of-war value, an informal value in astronomy originally suggested by author Isaac Asimov  
"Tug of War" is the title track from Paul McCartney’s 1982 album "Tug of War".  
Tug of war has been in Ireland for a long time and the creation of the Irish Tug of War Association in 1967 boosted the competition among clubs in Ireland and also enabled Ireland to compete in international events, such as the Tug of War International Federation (TWIF) World Championships. 
Isaac Asimov suggested a distinction between planet–moon and double-planet structures based in part on what he called a "tug-of-war" value, which does not consider their relative sizes.
This quantity is simply the relationships between the masses of the primary planet and the Sun combined with the squared distances between the smaller object and its planet and the Sun: where m1 is the mass of the larger body, m2 is the mass of the Sun, d1 is the distance between the smaller body and the Sun, and d2 is the distance between the smaller body and the larger body.
Note that the tug-of-war value does not rely on the mass of the satellite or smaller body.
This formula actually reflects the relation of the gravitational effects on the smaller body from the larger body and from the Sun.
The tug-of-war figure for Saturn's moon Titan is 380, which means that Saturn's hold on Titan is 380 times as strong as the Sun's hold on Titan.
Titan's tug-of-war value may be compared with that of Saturn's moon Phoebe, which has a tug-of-war value of just 3.5.
So Saturn's hold on Phoebe is only 3.5 times as strong as the Sun's hold on Phoebe.
Asimov calculated tug-of-war values for several satellites of the planets.
He showed that even the largest gas giant, Jupiter, had only a slightly better hold than the Sun on its outer captured satellites, some with tug-of-war values not much higher than one.
Yet in nearly every case the tug-of-war value was found to be greater than one, so in every case the Sun loses the tug-of-war with the planets.
The one exception was Earth's Moon, where the Sun wins the tug-of-war with a value of 0.46, which means that Earth's hold on the Moon is less than half the Sun's hold.
Since the Sun's gravitational effect on the Moon is more than twice that of Earth's, Asimov reasoned that the Earth and Moon form a binary-planet structure.
This was one of several arguments in Asimov's writings for considering the Moon a planet rather than a satellite.
See the Path of Earth and Moon around Sun section in the "Orbit of the Moon" article for a more detailed explanation.
Note that this definition of "double planet" depends primarily on the two-body structure's distance from the Sun.
If the Earth–Moon system happened to orbit farther away from the Sun than it does now, then Earth would win the tug of war.
From the orbit of Mars, the Moon's tug-of-war value would be 1.05, so the Sun would no longer win the tug of war with Earth.
Also, several tiny moons discovered since Asimov's argument would qualify as double planets.
Neptune's small outer moons Neso and Psamanthe, for example, have tug-of-war values of 0.42 and 0.44, less than that of Earth's Moon.
Yet their masses are tiny compared to Neptune's, with an estimated ratio of 1.5 () and 0.4 (). 
  The Fordsville Tug-of-War Championship - Kentucky's official tug-of-war championship