Well I was once like you so I think I can give you some advice
What you first need todo is excel in what you do. Be different from the rest, stand out in a crowd. Secondly you need papers to back you up, I don't know wether your school is concidered prestigeus but complete a university level education and write a thesis on some amazing new groundbraking subject.
While in school try to get an intern job at BMW. If you get a intern job try to do the best job ever and make friends with the people there. If you can do that your job at BMW is secure.
Visiting BMW career events is a mayor helper also you can get alot of info from the BMW career site but beware, alot of people reply to the positions on the site so make sure your resume is perfect into the details.
The BMWGroup career site can be found here:
http://www.bmwgroup.com/e/0_0_www_bm...eers.shtml?4_0
Their page for newcommers can be found here:
http://www.bmwgroup.com/e/0_0_www_bm...einstieg.shtml
See how I found those pages in a few minutes? The net can be a great helper. On those pages you can find a world of information about BMW and tune your resume accordingly.
Make sure you list your whole life in your resume. Small things like "I worked at a bar" (I did

) will show the Human resources people that you have human skills or "I worked at a construction site" will show them that you don't shy away from manual labor. I'm sure you had some parttime jobs, when I was going to school I had lots of um.
If you are invited for an interview, be yourself and do not be nervous. Do not act like your life revolves around this job, be nonchalant. Just have a nice conversation with the people interviewing you, pretend they're some friends you just met but don't be too close with them.
Finally, this is the most important part, don't be full of yourself and don't exadurate. I get alot of people who are just full of them selves or write down things they can't backup. If you would read some of the resumes you'd think some of these people are the center of the universe. Present yourself but be humble.
Building up credentials should be your priority rightnow.