Good job buddy, I don't get out and walk like people who "walk" but I will stop and pick up some trash and dispose of it properly if it happens to catch my eye and I am a foot.
With as much driving as I do I see where a lot of the trash comes from and that would be the beds of the pick up trucks, trash blows out of them all the time and I am sure you probably have seen it too with as many miles you have traveled in the last six or so months. I always take a look in my truck bed each morning when I travel, it seems that truck beds became trash cans for people in hotel parking lots, I wish I had a dollar for every Mc Donald's bag or drink can or cup I have had to remove from there before leaving the parking lot, none of which were mine. The folks I guess just couldn't stand it enough to carry it to the door or to their room to throw it away, damn near every hotel has trash cans near the doors but I guess that is just not as convenient as the bed of my truck. Here in Texas if litter blows out of the bed of your truck you can and will get a ticket for littering if the highway robbers see it happen.