shiny metallic oval object over the evergladeswe were returning from Miami via I-75 heading north back to Ft. Lauderdale, my husband was driving and I was looking out of the windows at the airplanes. I noticed a small very shiny, silverish metallic object somewhat of an oval maybe even a little oblong hovering very high in sky over the everglades. I mentioned it to my husband and continued to watch it for for about 30 seconds when suddenly it accelerated and took off in a westernly direction at an extremely high speed; I followed it for about another 30 seconds before it dissappeared. This object was extremely high in the sky, alot higher than airplanes that I have seen and it also went from just being stationary to moving quite fast. There were regular commercial airplanes in the sky at the time coming into ft. lauderdale airport and not many clouds in the sky at the time. I do not know if it qualifies as an ufo but it did not seem like any other plane I have ever witnessed.