Being able to take off from the ground. Not using a second system to vacuum its way up to a platform and then fall slowly.
This machine demonstrated zero ability to gain altitude in the air alone.
I don't think you watched the whole show. The third stunt was taking off from a stop to jump over some vehicles. So it did gain altitude in the air alone.
The Kickflip demo showed it taking off from the ground: https://www.youtube.com/watch?v=r5vsHHPVhJg