Yes I do ... I ride about 18-20 miles each way to work at least 5 days a week.However, I also have a locker and shower facilities at work - so I can change out of cycling clothes and into clothing that is more suitable for the job I have.But if all you do is see me going to/from work ... it certainly looks like all I wear is cycling stuff.Am I crazy? A little - because I'm not adamant that others do their bit for the environment by keeping their vehicles in the driveway and riding more bikes for personal travel (and better health benefits). Is your son? I don't think so. Just a little environmentally conscious and willing to step up and do something about it himself.and it sounds like he's saving even more of the environment by not consistently washing either his clothing or himself, which might be a LITTLE far-fetched...
He might want to change out of the shorts/bibs when not riding to avoid rotten crotch but otherwise cycling clothing is quite comfortable, especially during the hot months.