Driving northbound on the 125 to the 54 freeway. saw a very large and bright steady white light (dot) follwoing me as i got onto the 125 from otay lakes road. it looked out of place. it was above and to the left of me. it followed the 125 for about 3 miles until close to the 54 junction where it stopped motion and just hovered. i notcied a second light just east of the first one. heavy military helicopter activity tonight but all at low flight altitudes. definitely not a star or a planet.