Somewhat ironically, the "impressive" production numbers are actually below what they were expecting for Q1. Being generous and assuming only a 12-week quarter, 51,000 cars is only 4250 cars/week, far below the 5000 they were expecting to hit back in January. The news is that they are finally able to maintain this sort of scale.

The unfortunate news is that despite the months of lead-in time to getting up to this scale, they never bothered to get a handle on the logistics of shipping out the completed product, and are now stuck with massive lots of undelivered Model 3s. Musk's "genius" plan to deal with this is to spend a few million dollars and few months to build a new fleet of trailers, rather than simply work with existing companies to ship existing products to existing customers within the next month.