The 18’ bollards aren’t too impressive, but they are actually starting to build double barriers now? With at least one at 30’? (though the 30’ pics I saw yesterday were counting the 6’ underground, making for only 24’ in height.)
And a roadway in between? That would be starting to get serious—though of course on only about 1% of the border.
I don’t know if I’d be very happy driving on a road between two barriers like that, especially if their design lets gun barrels be poked through. Too much like a trap for the BP agents.