I think that is how you should start moving in the automobile field. First you start up assembling. Then you should build some small interior and exterior parts, then some body parts, then frames and chassis, and finally the motor and transmission. I think that is how india went with their automobile manufacturing. (Also korean auto makers)
Problem with Micro is they are not willing to go beyond the assembling process. We all know that they have lot of tax benefits (thanks to the government) but still they import all the parts to assemble vehicles.