They won't reach proper automation until they're getting 5,000 to 8,000 Model 3s per week. But, of course, nobody really does automation to the level that Tesla is trying to do, so their current mix between labor and automation (as they continue to build up their automation line) is approximately what other car makers do.
Getting full automation to work is really hard, takes a lot of labor and time. I think they'll do it, but the task should not be under-estimated. In the meantime, they've already achieved a production rate per factory line similar to what a typical automaker like VW would do (on the order of 100,000 per year for a factory).
Like SpaceX around 2015 or so. Respectable, but not yet Earth-shattering (i.e. 2017).