Few cases of group less than 2 pax between thousands of minimum 4 pax and more (last average is of 6,9 4% and in increasing ) is normal and after all recommended peoples travels at all latitudes.
Moreover Not all peoples travelling Libya with foreign plated 4x4 are tourists ! (Specialists, archaeologists, officials, ecc that aren’t submitted to this disposal. )
All illegal? Much maruf (not know ) .
You can always ask them how they managed , but you will hardly get an answer. Good’s ways are endless as endless are the way to swindle the official (this also endless game) and since they found the way they keep for themselves or at least for goodfriends.
Inch’Allah femti kwies ( Hoping it is clear) marratani salam .