Rectangular bright craft on Hwy 139 From Monroe to Bastrop,LA.

Leaving Monroe, LA, around dusk on Hwy 139,
This was seen in the East appearing to be only just above the treetops.  It seemed to follow along the path our car was taking (North on Hwy 139) and even crossed the road once and came back to our left (East) side.
It followed along until just before entering Bastrop, LA, between 7 and 8pm that night. 
My family and I have talked about this event for years and always wondered if anyone else had witnessed this as it was still early and there were plenty other vehicles on the road. 
My jaw dropped when I read the previous report on this last night, and after confirming with my daughter and nephew the time of night, as well as the date.  I have no doubt that the other poster saw the same object that we did.