While there's only been few LFP cars shipped in the USA, just about all SR+ 3 and Y cars shipped from Shanghai from late 2020 have been LFP. None of these LFP cars use cylindrical cells, up till now they have been CATL Prismatic. I'm not sure how you could have missed this as we've discussed it here extensively and there has been a lot of online coverage of LFP cars delivered to Australia and Europe etc. Elon has also talked about LFP cars a lot on conference calls including the ability of LFP to use a variety of formats, including the current prismatic.I'm still not convinced that this is shipping in Tesla cars (yeah, yeah, yeah, I know, I'm hard to please, I'm an engineer and I need Elon to say he's shipping prismatic or actually see the pack come out of a working Model 3)