it lasted longer than I thought it would
1. It was a Google-toy. Google-toys never last long.
2. It was a flying car thing. No, none, zero, flying car things have proved practical. Not even autogyros.
3. It was an all-electric aircraft. Batteries are heavy.
4. It was heavily hyped. The combination of Google-toy, flying car thing, and all-electric aircraft never looked practical to me, and all the breathless hype compounded things.
Way back when this thing first surfaced I pointed out some problems and was roundly downvoted. https://forums.theregister.com/forum/all/2013/11/21/zee_aero_flying_car/ and, well... it's history now.