The tesla store has Model 3 accessories available, and I noticed there's a USB-C cable available so I ordered it. Just received it today, and it looks like it will work with the existing docks in the Model X and S.
It was $14, but worth it for saving the effort of shaving down a regular right angle USB C cord.
It was $14, but worth it for saving the effort of shaving down a regular right angle USB C cord.