[ben_bai]

The 2X predecessor is called VC200 and reaches 70km/h and had a flying time of around 20 minutes.

[dmitrygr]

In EU and USA, flying a passenger aircraft requires reserves of 30 minutes minimum (more in some cases, never less)

if your flight time is 20 min, you cannot legally take off

if your flight time is 31 minutes, your flight cannot legally be planned to be over a minute long