It's very clever design. Much like the Sebo Felix. Felix is powerful, but this Vorwerk is on the another level.
Like many other "home cleaning system" vacuums Vorwerk has huge amount of accessories. I just have powerhead and hard floor nozzle, which is genius. No other upright is so nimble on the hard floors.
These are just very expensive to bought new. Accessories are also expensive.
Only thing what is missing is the manual height adjustment for the powerhead. It's hard to push on full power, but lowering the motor speed helps a lot.