You should look out for off-leash Obedience classes, with an Obedience club. Gonzo has a very solid recall & stay after going through a few months of classes and practicing a lot.

I also don't recommend bringing him off-leash in any unfenced area until you've practiced a lot in fenced areas with distractions, and you're fully confident. I would never let my dogs off-leash near any cars, ever.