December results are out (for example, see this excellent tabulation), and unsurprisingly, the car with the most sales in the US for 2017 was the Tesla Model S, with a total of 27,060 cars sold. But, Tesla’s typical self-congratulatory attitude needs to be slightly tempered. The 27,060 vehicles sold in 2017 compares to 28,896 units sold the previous year. Yes, the Tesla Model S sold 6.4% fewer units in 2017 than in 2016. Stablemate, the Tesla Model X, had a reported 21,315 units sold.