Spitfire - loop the loop?

[Shotgun Jon]

I was driving up the M40 today and at about 2.45pm when I was near Aylesbury I’m sure I saw a Spitfire in front of me do a loop the loop.

I’ve looked on flightradar but can’t find anything. Was I seeing things?

It was an awesome sight whatever aircraft it was!

[Shotgun Jon]

No, how do I do that?