The learner driver is already hoping to book her next lesson, BSM said
A learner driver taking her second lesson managed to flip her instructor's car on to its roof in Oxford.
The woman, in her mid-20s, hit a gatepost on Old Road in Headington, causing the Fiat 500 car owned by driving instruction firm BSM to flip.
Paramedics treated the woman and the instructor for cuts to their hands and elbows at the scene of Sunday's crash.
BSM described the crash as a "freak incident" and said it took health and safety very seriously.
Communications manager Paul Shepherd said: "We have spoken to the learner driver who is fine and is already hoping to book her next lesson with us soon.
"The instructor responded calmly, professionally and swiftly, and is back on the road in a new car."
Russ Dunne, 30, of Old Road, was talking to a political candidate on his doorstep on the opposite side of the road when the crash happened.
He said: "I heard the car accelerating then I heard a loud bang when it hit the gatepost.
"I saw it roll on to its side and on to its roof. I hoped no-one was seriously injured and I was worried it would catch on fire if fuel was leaking."
Mr Dunne rushed over to help pull the learner driver out of the passenger window. The instructor had already managed to pull himself free.
"The instructor was very quiet and calm he just said 'accidents happen', but the driver was in real shock and kept saying she couldn't believe it."