its getting worst and worst. my mechanic friend hears the noise from the rear so he took the whole rear end off including the driveshaft to check it. brakes were a little worn out and shocks was leaking but he didnt find anything else that could be making that noise. some stuff was a little loose that he tightened but nothing that could be making that noise. his best bet is the driveshaft since part of the bolts? have been replaced and the others are still all original. the sound use to only come if you drive it for about 10-15 miles. then its like every 5 miles.. now its pretty constant and consistent. sounds something like someone tied a soda can to the bottom of the car but not as loud. also besides the sound, it has this other feeling/sound.. feels like tires are low but its not.. kind of a rubbing feeling. besides that, the car drives like normal but that nasty sound. any suggestions? dont want to bring it to a real mechanic and pay the $$$.