2 mysteries which seem unexplainable:
Often there is solid debris on the road - retread tires, dropped items. Almost all of them are sitting right on the markers between 2 lanes. The question is, if somebody moved them there, why didn't they just pick it up ? And it doesn't get to the lane markers by itself - who moved them there - aliens ?
The time signs to get from 1 place to another are all over Houston. Does somebody drive from point A to point B, and send in the time it took ? Or do the machines do a few second time lapse picking out a vehicle, and extrapolate ?