Reports are arriving that Mahesh Babu is doing unthinkable these days. Upon the success of "Srimanthudu" at box office, Mahesh is so glad that he wants to gift something to director Koratala Siva. For that reason he stunned the director yesterday.Simply by asking Koratala Siva to come to Audi showroom in Jubilee Hills the other day, Mahesh Babu has gifted a brand new Audi A6 car to Koratala Siva. That's a terrific gesture by the Superstar after scoring a second biggest hit of Telugu cinema after Baahubali with Srimanthudu. More details about the incident are yet to come out.