Potter believes that S and X deliveries would have increased Tesla's Q1 2021 delivery figures by around 15,000 units, giving Tesla a massive 200,000+ delivery quarter. The concerns from the Piper Sandler analyst do not have to do with the uncertainty regarding Model S and Model X deliveries to customers, but rather the unexpected delays that Gigafactory projects are experiencing. While Tesla has been extremely vocal regarding the first production dates of its upcoming manufacturing plants, Potter believes that uncertainty with Tesla's other models could translate to some delays at Giga Texas and Giga Berlin, but it's not making the analyst change his outlook on the electric automaker.