 In RV 6.61.13, the Sarasvati river is described as being wide and speedy, like a (Rigvedic) chariot.The Indus Valley Civilization sites of Daimabad and Harappa in the Indian subcontinent, there is evidence for the use of terracotta model carts as early as 3500 BC during the Ravi Phase.During the Harappan Period (Harappa Phase, 2600–1900 BC) there was a dramatic increase in terracotta cart and wheel types at Harappa and other sites throughout the Indus region.