I lived and worked in Saudi for 3 years. As said women are not even allowed out of the house without a male relative to accompany them.
I drove over 250,000 Km in Saudi without even a scratched bumper. Saudi has the worst driving in the world , there are NO laws relating to driving a male can get a driving licence just by sending off for it on his 17th birthday.
Because of this the population of Saudi is actually decreasing due to the huge numbers of road deaths almost all male and under 25. There are less than 4 million native Saudis but the population is over 25 million , the rest are immigrant workers mainly from India , Pakistan ,Somalia and the Philippians .
A Saudi father will often buy his son a powerful sports car for his 17th birthday, all too often the son is dead in an accident within a few weeks.
In view of this it is perhaps as well women can not drive.