Explanation: (E) The job of a chauffeur is to drive a car; the job of a mechanic is (often) to repair a car.
CHAUFFEUR: a person hired to drive a private automobile for someone else
Propel: to push, drive, or impel onward, forward,
or ahead
Tinker: a person who can make all kinds of minor
repairs; jack-of-all-trades
Launch: to hurl, discharge, or send off (a weapon, blow, etc.)