Yes and
yes. Those two elements help us tack down some of the shooter's MO and suggest a fair level of skill. We'd never been sure whether he had been shooting from the side of he road or another car, but in these attacks, at least, we know. You can't shoot out a sunroof from another car, so the shooter had to have been up on the overpass or high on an embankment. We now know that he can get into stationary positions off road, make difficult shots, and get out, all without being noticed by a river of people going by in cars.
Those attack sites offered precious little in the way of cover (see the screen shots below). He couldn't be sure that no one would have seen him get into position and called the police, so he would have to move quickly, take a relatively few well aimed shots at targets moving 75 mph, and get out quickly.
It's been clear for some time that most of the many the shatterings along I-25 were deliberate and the shooter(s) still active, but it was hard to put into one sentence that everyone would get. I think this pair of shatterings does that. "The latest attacks blew out sunroofs of two cars within an hour on the same six mile stretch of I-25."
Here's the view northward by the Mountain Vista Dr. overpass. (Footwarrior had suggested the Vine overpass might be a better interpretation of the location, and may be right. That area is very much like the Mountain Vista overpass but with even less vegetation or other cover).
Here's the south side of the overpass at East Harmony Rd., not far from where Cory Romero was wounded. (We aren't sure of this location either, but the alternative Hwy 14 area offers even less cover).
