None where I live, they're all gone.
There's only one regular drive-in theatre in the Sydney metropolitan area (population 4.3 million) although there is an occasional drive in located on Randwick Race Course. I'm not sure how often that is used. It's a pity, because drive-ins gave somebody the opportunity to write this very clever but fairly questionable limerick:
The modern cinematic emporium
Is not in the least a herborium;
But a highly effectual,
Heterosexual,
Mutual masturbatorium.
There used to be quite a few around here but not a one any more. Used to be fun going to them in the 60's. Now there are houses where they once were.
I think their is still one in north Houston I haven't been to one since late 70s
They are very scarce, and I miss them a lot.
Yes, One in Weslaco, Texas