[al3xandre]

I think the video was accelerated (look at cars in the background or wind in trees/on grass or the occasional bird/insect).

Which means the drone may not have been as fast/manœuvrerabke as it looks.

It would explain the crazy Camera tracking skills.

[05]

Definitely not accelerated, just ridiculous thrust to weight ratios on those mini quads. You can tell from the sound - the pitch corresponds to RPMs you would expect from those specs (which are listed in the description BTW)