Emergency services were called to a road accident in Boston yesterday after a Kirton woman was taken ill at the wheel.
The incident happened on London Road at 5.10pm after the grey Citroen C4 collided with three parked vehicles.
Lincolnshire Police said the collision was low impact but the 79 year-old driver was taken to Pilgrim Hospital having suffered what is believed to be a prior medical episode at the wheel.
She was later transferred to Lincoln County Hospital.
The road was closed until 7.45pm.