This is the only way to go with fast action footage from a drone aloft.
See a few of their YT vids following such action, nothing compares.
Of course, the Skydio 2 doesn't do (as easily) what DJI drones can do with cinematic shooting and range etc.
They are simply different drones, with different capabilities, for far different purposes.
The active track, smart capture, nothing is going to reliably keep up with mountain biking in most cases.
Scotland ?
If it's big open terrain, almost no trees, not too hilly, fairly green (or all brown) type landscape (for contrast), you could try slower riding, wear contrasting jacket (if all green around wear a black jacket / dark pants etc).
Keep close, you need to have some decent amount of target for active track to keep in touch with.
Maybe rig up the controller to hang around a neck lanyard to hang mid chest, left and right attachment on controller so it hang right and sticks are not compromised.
Different drones will have features for moving from home point.
You will have to be very aware of this, and what to do if (when) the drone and controller lose each other, or active track loses you . . . and be able to respond fast before it returns to some other place like home point, or last reset home point.