"We have fixed a day every month to pursue our campaign," activist Madiha al-Ajroush told AFP today, insisting that it was a coincidence their latest protest and Obama's visit came on the same day.
Tomorrow's action is part of a campaign launched on October 26, when 16 women activists were stopped by police for driving.
"We urge women to take the wheel tomorrow (Saturday)," activist Aziza al-Youssef said.
The campaign has gained momentum since 2011 despite activists being arrested for flouting the ban.
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"As well as appointing a woman driver during his visit, President Obama should try to meet Saudi women who have defied the driving ban," said Hassiba Hadj Sahraoui, Amnesty's deputy director for the Middle East and North Africa.
Amnesty asked Obama to "raise the plight of women" in the kingdom, pointing out that in addition to not being able to drive, they continue to face "entrenched discrimination" on many levels.