The woman, hailing from Sikkim, was attacked at around 2 am when she was returning from Delhi to her residence in Sector 17 here. As she reached near her house, she was dragged by three men into their Swift car. They then took turns to rape her in the moving vehicle while heading to Najafgarh in the national capital, 20 kms from here, a senior police officer told PTI quoting the victim's statement.