catia or pro-e

See, CATIA is used in styling and various parts where looks are concerned.

PRO-E is dedicated to design of machine components. We can always use any software for anything. However, the best results would be obtained by the specialized software in their particular field.

I would recommend learning any one software thoroughly and be specialized in one. If you are going for CATIA then you will require ABACUS for non linear analysis. Those people will teach you that. 😀