I adore the concept of these flying coffins, and have done since watching Return of the Jedi in '83.
However even with a ballistic parachute and some clever software I can't think these could ever be safe. Perhaps if limited to say 5-10ft off the ground, a speed limit of perhaps 30mph (50kph) and have some sort of advanced airbag system perhaps the pilot would survive most regular accidents.
Planes can glide and give the pilot enough time to react to an engine-out, likewise helicopters can auto-rotate - there is no stored energy in these PEVTOL's that can buy time to 'safely' crash - as soon as you experience a problem you are instantly tumbling out of the sky.
The JETSON talks about surviving a single motor out event (7/8) - my guess is you'd need to survive at least 50% 'engine-out' scenario to be vaguely usable. Just look at the redundancy in something like the VOLOCOPTER.
Also 100K$ is a fantasy - something like $100K of the purchase price of a new Cessna 172 is the manufacturers one off liability insurance - and that's an old, proven and safe design (from 6:00 onwards):
So just one accident in the Jetson and the company is instantly out of business and the fleet is grounded, so no-one will ever get close to getting their legs mangled.