rocket like object in mountain ranges between France and Spain while driving on the motorway - quickly coming down from the skyDriving on Motorway between France (Biaritz to Madrid) through the Pyranees mountain range. Before we past the border 'Pieage'. Saw what I thought was a fighter Jet, very fast from a hight 1000m to very low 100m perhaps lower - looked like it was going to hit the earth but field of vision could not say where? surrounded by mountain ranges. The Jet just went over the brow of the nearest mountain. There was zero noise. We thought it was an asteroid - size of a crater, shaped more like a rocket, with a long Comet-like tail. The rocket like objects had a red/dark orange-like round tail end, and the end was dragging like a firework coming down from the sky. Initially I did think the shape coming so fast from the sky was more like a saucer before it turned like a rocket as it shot lower and lower in these 4 seconds. The brain just tells you it must have been a fighter Jet or Asteroid - I did not recognise this type of VISION.