"Namaste Darshako Today we used our brain Samay ka sadupyog we took a train," She wrote in the caption.
Meanwhile, on the work front, Sara will be next seen in director Laxman Utekar's next untitled romantic drama film alongside actor Vicky Kaushal.
She also has 'Gaslight' with Vikrant Massey and Chitrangada Singh, and Karan Johar's next 'Ae Watan Mere Watan' in which she will play a brave freedom fighter in a fictional tale set against the backdrop of the Quit India Movement in 1942.
Apart from that, she will also be seen in director Anurag Basu's next film, an anthology, 'Metro...In Dino' alongside Aditya Roy Kapur, Pankaj Tripathi, Anupam Kher, Neena Gupta, Konkana Sen Sharma, Fatima Sana Shaikh and Ali Fazal.