Does this marker indicate a balloon of some kind (on FR24)?

[Nitr0]

At that altitude and speed, more than likely (in all probability) is Project Loon:

Project Loon internet balloons

Hello all. I’m looking at HBAL2 cruising at a brisk 12 mph at about 64Kfeet: https://flightaware.com/live/flight/HBAL2/history/20200529/1453Z see also here: Loon - X, the moonshot factory Flight history shows it was going 70 mph at one point? I don’t know much about weather, but how in the world does a balloon go 70? Does anyone know what it’s doing up there? Is it actually providing internet access to someone at this time, or is it just some kind of test flight? Anyone see another, or is i…