In motorsport it is common to have one or more test drivers that work with the mechanics to help develop the vehicle by testing new systems on the track.
Famous quotes containing the words test and/or driver:
“If a test of civilization be sought, none can be so sure as the condition of that half of society over which the other half has power.”
—Harriet Martineau (1802–1876)
“God help the horse, and the driver too!
And the people and beasts who have never a friend!
For the driver easily might have been you,
And the horse be me by a different end!
And nobody knows how their days will cease!
And the poor, when they’re old, have little of peace!”
—James Kenneth Stephens (1882–1950)