In Amendment No. 1 to the S-1 that Rivian Automotive filed on October 22, it mentions that a total of 42 R1Ts were delivered and 56 R1Ts produced.

In the consumer market, we launched the R1 platform with our first-generation consumer vehicle, the R1T, a two-row five-passenger pickup truck, and began making customer deliveries in September 2021. As of September 30, 2021, we produced 12 R1Ts and delivered 11 R1Ts, and as of October 22, 2021, we produced 56 R1Ts and delivered 42 R1Ts. We plan to launch and commence customer deliveries for the R1S, a three-row seven-passenger sports utility vehicle (“SUV”) in December 2021 following the completion of ongoing vehicle validation and all required testing.