Wait times in the US for the existing models are already low enough that there's basically no backlog. (out of the 420k reservations they had at some point, you can think of it as half those reservations being overseas -- not yet tapped, and of the remaining 210k half or likely more of those are for the 35k version. They've already shipped 91k cars, pretty much only to the US and Canada, so the US/Canada backlog for reservations is mostly new reservations. Also, they don't yet offer a leasing option, which is how most people like to buy cars these days.
Either the demand will die down REALLY soon, or not at all. Having seen the effect of someone I know test driving a tesla with no intent to buy, and then complaining about how intensely bad "regular" cars have felt for her since then, if anything sales will grow as more cars are distributed and people's immediate family and friends get to experience the car. In other news, 40% of Europeans said in a recent Ipsos Mori survey that their next car will be electric.[1]
In other words, I wouldn't hold my breath that this is going to die down any time soon.
[disclaimer: I am a big fat tesla fanboy (if it wasn't obvious) and have bought stock in the company, but I hope I am making the case with logic and data and can be convinced otherwise. That said, my phone background image looks like this: https://i.redd.it/lx9635tjoyf01.jpg]
[1]:https://www.treehugger.com/cars/europe-40-drivers-say-next-c...
