We are still discussing vehicle construction in class.  I found a few videos that give good visuals of how and where different steels are used on a vehicle.  The videos are produced by Ford and they promote Ford.  I am not trying to convince you of how well Ford’s are built, but I think you will agree the videos do a good job of demonstrating the steels. 

http://www.youtube.com/watch?v=1ZF0EUlJprU http://www.youtube.com/watch?v=DQET-JW81DE&NR=1

Here is another video of how a Chevrolet Corvette aluminum frame rails are formed.  Again, not endorcing Chevrolet, but a good video, check it out!