Whenever there's a free game trial for Switch Online members, we usually see it announced in Japan first, then Europe, and finally North America. This time around, things are going in reverse!
North America was the first region to announce the free trial of Crash Team Racing: Nitro-Fueled for Switch Online members, and the opportunity is yet to be announced anywhere else. That said, we know it's being offered in Europe, as the official game page for Crash Team Racing: Nitro-Fueled has a very tiny blurb for it. Looks like Nintendo of Europe will be announcing this on their social channels any minute now.
For those who missed the news yesterday, starting Dec. 30th, 2020 and running to Jan. 5th, 2021, Switch Online members will be able to play Crash Team Racing: Nitro-Fueled in its entirety. This includes the online component as well! Once Jan. 5th, 2021 comes and goes, access to the game will be removed. There's usually a sale for the game during these trial events as well, so be on the lookout for that.