It can be a start for a Pakistani Auto Maker.
There has been many such car companies around the world which started the same way.
Kia Automobile of Korea started making Bicycles in the 50s, then moved up the ladder to make the Motobikes and then cars. Now look at them.
Honda Motor Company of Japan was started by a car Mechanic after World War II. He started making an affordable Motobike first and then a small car and now the rest is history. It really takes a good business strategy, a good product, competitive pricing, and know where to market how to use the initial profit for reinvestment and continue to improve on the product specially in the first crucial years. Many new companies do not become profitable for years, then slowly when the trust builds in the market the profit start to take off.
Good luck to and well wishes to Habib Motors.