text:  But Choi points out that cleaner trucks still pollute the air by grinding down their brakes and tires. Even if they're not burning diesel, we get their brake wear, their tire wear, all of these other things that really impact those of us who are, I call it the stroller zone, right? So it's that, you know, two feet from the ground, that six feet, it's that zone where people are breathing in what trucks are kicking up.