Police are appealing for witnesses to a serious collision on Capel Road in Rusper at 6.20pm on Friday (September 27).
A black Volkswagen Polo was travelling south when it crossed into the opposite carriageway and collided with a blue Ford Ranger which was travelling north.
The 75-year-old male driver of the Polo from Leatherhead was taken to the Royal Sussex County Hospital with serious injuries.
The man driving the Ford from Guildford was uninjured.
Anyone who saw what happened is asked to contact police on 101 quoting 1357 of 27/9.