Is it possible to get inspection done with expired drivers license? Which is impossible to renew, however according to DMV mine is extended to 12/31/2020.

I would go and when you present your license don't say anything about it being expired. Ans if you want to be certain go and ask your local police department if your license is good until 12/31/2020. I know I was told my aunts rejected sticker was good until Nov. 30,2020 and her month is September. Good Luck

I suggest getting your license renewed, but I don't think they actually check .but play it safe and renew it

I am not sure about that but they only asked me for my registration YMMV.

No

I believe if its extended you can go. With ni problem but i suggest to call .