There is some hotwire in the Indianapolis elephant exhibit, but it was still shocking to actually see grass there. Most elephant paddocks are dry and dusty.
I believe it is 2 acres in size, and there are 7 elephants (2.5) with 3 of them being ten years old or younger. This will possibly be regarded as a mid-sized exhibit in the United States in the future, but at the moment it is arguably one of the best in North America.
The LA Zoo is going to give, or is giving, one live tree a month to Billy for one full year. I don't know if they've started already or if they are doing it once Pachyderm Forest opens.