After vibrate, the MOST important function a phone can have is Speakerphone. Have you ever called a company and been put on hold? You need speakerphone! And I use speakerphone while I am driving all the time. LG is SO STUPID for not putting Speakerphone in this phone. Very frustrating.
This may sound really dumb however if you need vibrate (in most cases as a courtesy to others) why would you want a speaker to annoy the same people. By the screenname you have you must not be a cingular user so why even start a thread on a cingular phone.