Britney Spears' recently-appointed chauffeur has quit - because the pop star is too much of a "liability" to drive around. The unnamed man was hired to drive Spears, her kids and a court-ordered monitor around after the troubled mother-of-two was banned from driving her sons herself. But he has reportedly resigned just days after his appointment due to the life-threatening pressures of ferrying the singer around. According to TMZ.com, the chauffeur has endured a number of near-misses with paparazzi and other vehicles whilst driving the star, and feels unsafe in the job. Spears was ordered to hire a driver by ex-husband Kevin Federline's attorney earlier this month (Nov07), after her road skills were called into question. The ban came after Spears was caught on tape running a red light with her two children in the back seat.