A FlyerTalk Posting Legend
Join Date: Sep 2009
Location: Minneapolis: DL DM charter 2.3MM
Programs: A3*Gold, SPG Plat, HyattDiamond, MarriottPP, LHW exAccess, ICI, Raffles Amb, NW PE MM, TWA Gold MM
Posts: 100,413
IIRC there was a thread in the National forum about AmEx Plat card getting Executive Elite, but (the more generous version of) the offer might have expired. It also might just be for new members, so check there before signing up with National.
I did it and recently got the COVID-19 extension too even though I haven't rented from National yet.