That scene also makes me cringe because I don't know how often it has been said how dangerous it is and people just don't seem to get a clue.
It also bothers me for another reason and there are many other scenes like it that are just as stupid, though I can't recall them right now. I just know they make me think get real. Clark has spent all this time hiding his abilities. However when they want to have a "cute" or "sneaky" scene they have him glance around - barely - and then pull a super stunt. He is in the middle of the street. People could be looking out windows of buildings, cars, roofs etc. but they have him do a quick glance and then do somthing "super". I hate to tell you guys I'm sure someone saw the "super feat" and they world would know Clark Kent is Superman.