I get that. But the total in those 3 countries is about 1,500 deliveries in April. Where did the other 9,000 in-transit cars go? I still think many were indeed done in US and Canada.
Those three countries make up a bit over half of European deliveries. So nearly double it. Then there's Chinese deliveries - they got as many ships, yet appear to have made less deliveries than Europe (due to customs delays), meaning even more inventory. And beyond the EU and China, there's also Canada and Mexico (although they won't represent much inventory) for Model 3, and a good number of additional markets for S+X.