A woman in her 50s was trapped behind the wheel by her legs after a two-car collision just off the M40.
The driver was one of two passengers taken to hospital after one car was forced off the road in the crash near the A452 Greys Mallory roundabout on Friday afternoon.
The woman was still conscious when she was cut from her car by firefighters and rushed to University Hospital Coventry and Warwickshire for further treatment.
The second driver had managed to get out of his car and is not thought to have been seriously injured.
Emergency services including the Air Ambulance, fire crews and police described the crash as “serious”.
A West Midlands Ambulance Service spokeswoman said: “One driver, a woman in her 50s, was trapped by her legs in the wreckage and despite suffering potentially serious leg injuries she was fully conscious.
“Ambulance staff and the doctor worked as a team to administer pain relief to help relieve her discomfort whilst the fire service worked around them to release the woman from the wreckage.
“The second driver, a man in his 30s, sustained a minor head injury and was taken to Warwick Hospital as a precaution.”
The crash left traffic at a standstill back onto the M40 and through Warwick town centre into the late afternoon, with police warning drivers to avoid the area.
A Warwickshire Police spokesperson said: “The M40 junction 14 southbound exit sliproad is currently closed and traffic is building up in the area.
“We would advise motorists to consider alternative routes and we will update when more information is available.”