[mortenjorck]

From the video, it looks like this craft is limited to about 10 feet in altitude (certainly as high as I’d want to go, but I imagine their primary market at first is going to be thrill-seekers). And yet that’s really all you need for a lot of point-to-point transport, especially in rural areas (which I also imagine will be the only legal places to fly these for the foreseeable future).

[rob74]

A thing with what amounts to buzzsaws conveniently mounted at its extremities, flying at 10 ft. (3 m) max altitude? Can't imagine anything going wrong with that...

[teeray]

You want to be higher. Altitude gives you more time in an emergency (like waiting for that chute to deploy). Once you’re above the altitude that will kill you on impact, more altitude won’t make you more dead. Also, wires are at low altitude, and are responsible for many rotorcraft accidents.

The real limitations come from Part 103, which limits ultralights to uncontrolled airspace (Class G). These aircraft will be limited to 1200 ft. AGL in most of the country, and 700 ft. AGL near many airports and their associated approaches.

[SideburnsOfDoom]

It does not appear to be limited by the Wing-in-ground effect. This effect apparently tops out at approximately half the vehicle's wingspan; and they are above that.

https://en.wikipedia.org/wiki/Ground_effect_(aerodynamics)

[aero-glide2]

I'm not sure that is accurate, why would they include a parachute?