You cannot localize all car parts, specially in a technology-deficit country like Pakistan. Even in US and Germany, a lot of car parts are imported from different countries. Even the best selling "most American" Ford F-Series truck uses 40% imported parts. Modern cars are made from a global effort due to increasing features adding more complexity.
Forget local technological revolution, that simple isn't going to happen in our lifetime, mainly due to poor government policies, brain drain, and illiteracy.
What Pakistan can do is nurture the IT industry. Its the fastest growing industry in Pakistan at this time. Allow long term visas to global digital nomads/freelancers and let them avail income tax exemption or 1% tax already implemented. UAE offers these visas, but the cost of living and visa/permit fees are very high.