Forget incentives, firstly you have illiterate paan chewing corrupt pieces of shit as top brass in customs
We also know that anyone who gets “bhartee” in customs does so to earn “ooper ki kamai”
So forget anything from that side unless you can blackmail them with something strong and sinister like proving their children dna dont match etc...
Coming to excise and taxation, they are in same boat and the collective of them dont know how to apply taxation on them for road use.
Coming to govt, all the bigwigs of any govt are “installed” without consulting their qualification (if any) on powerful seats. We also know professional consultancy does not exist on any level of federal or provincial govt, so getting something done for such is a futile exercise.
We also know that Pakistan excise and customs are stuck in pre 1947 raj (the code that they left here) too bad electric cars are a fresh invent, it might take another 70 years for such to materialize.