Amorphous black object floating approx 300 feet from the ground over downtown Los Angeles at the 101 freewayMy older brother and I were driving Northbound on the 101 fwy when I spotted a black object. Size estimate is 7 to ten feet. At first it appeared to be a bunch of black ballons in the sky due to the drifting nature. The object was oblong but it kept changing shape. It first appear as a shamrock-likeshape. It would then change into a "V" shape, Then the shape of a staple. The reason why i believe it was not balloons is because it changed into a tube or snake-like shape. it drifted into the clouds. The weather was overcast and clouds were abundant. I have never seen a UFO in 31 years of my life and consider my self a skeptic, but this object bothered me. I did take a photograph of it with my cellular phone.