That was taken from along Southwest Parkway which is in Southwest Austin, but not quite near the mall. My best guess is that it was taken from one of the parking garages at the AMD Campus on Southwest Parkway. The address is 7171 Southwest Parkway. Click on the link below and view it in street view. As you start down the hill the office buildings are on the right and downtown is on the left.
https://www.google.com/maps?q=7171+S...78735&t=h&z=18