>Weird, that’s crazy if true. Do they just put them all on a single ship? Is it somehow cheaper? Otherwise I’d assume they ship them as they roll off the production line

It's true, you can look at the numbers yourself.

This is related to two things:

1. A lots of their cars are still shipped in. So one or two ships arriving with thousands of cars each will skew statistics for that month.
2. Tesla overall has strong pushes at the end of the quarter. If you look at the graphs of their sales it's basically peaks and holes whole year, while most other car makers are more flat. This is mostly left-over from the time they were producing thousands of cars, struggling to survive and every quarter counted. Old habits die hard