tanong ko lang

what's the deal with plate numbers with 168? if you check the rules on vanity plates, the number 168 is specifically mentioned

of course, the other numbers are those in triple digit (e.x. 111) or with zero in between two similar digits (e.x. 101)

but 168?

my plate ending is 168 (inherited) but i would love to trade this in for another plate ending with any number from 3 to 6