Van's RV-8 (N88NM)

Actually a very nice Van's RV-8 built in 2019.

Why is it labeled "Cessna Citation II"?

I bet the photographer fat-fingered the registration in his google search.

It's not even a Cessna, let alone a Citation.

That's a nice pic, Oliver! And while the registration number is obviously correct, you might want to change the aircraft type designator to RV8. That is the ICAO type code for a Van's RV-8. C550 is the code for a Cessna 550 Citation II.

The important thing is that he caught it over the green dot at Oshkosh!

Cessna's newest slow flight jet. It won't be a high altitude road block. It's a low altitude road block for a JET. First tail wheel jet. What will they think of next.
Single pilot type rating jet.

Steve, the ME 262 was at first flew as a tail dragger.