buy and drive for one month before all software goes offline, ok? if software is buggy then cannot even detect key then become a giant brick on 4 wheels ok?

nope. sometimes bugs are not found immediately. given how the neta engineers were likely not paid in time, you can imagine how bad the quality of their code could be. in all likelihood, the software would have some safety features that check against the timezone to issue a new certificate so that the software can run without issues

try rewinding or fast forward your phone or your computer's time and see if you can still browse the internet.