Cross Dressing, Transvestites and the Fourth of July

Where is the line drawn between cross dressing and being a transvestite. I ask this question, so that I can properly describe a couple of things I saw today. This being the Fourth of July, it is my patriotic duty to go somewhere, eat food with friends, drink beer and blow shit up. Well, I wasn't feeling very patriotic, so I just ate the food, while drinking soda. No explosions were involved. This was all accomplished at my Sister's friends house. Emillie (my sister) was having a barbeque at a friend house and asked if I wanted to come over. I of course said yes, knowing that this would involve a half an hour drive over to her house. Living in Kansas prepared me to accept long drives to get anywhere interesting. I live in Missouri now, but I'm still OK with the drives. This drive took me down I-70. Just as I was hitting the city limits I noticed a couple of cars parked on the right shoulder and that the front car had a flat tire. There were two guys up front changing the tire, and a third standing in front of the car. The third one caught my eye, because he had blue hair and was wearing a blue shirt. As I got closer I realized that it wasn't blue hair, but rather a blue wig, and that what I thought was a shirt was really a short blue sequined dress. Interestingly there was never a doubt in my mind that this was a man, because if it was a woman she would have had a hormone problem. This guy was built like an athlete. I didn't think about this a whole lot, because my exit was comming up and I needed to slow down and switch lanes. I exited onto another highway, and continued on my trip. As I continued on, I passed several cars. (Those of you who've driven with me before shouldn't be surprised that I passed someone.) As I switched lanes to pass this red Corola that I was approaching I noticed that one of the passengers had neon pink hair. As I got closer I was able to see that this person had on a pink sequined top (probably a dress) and was also built like a football player. Is this a coincidence or am I going crazy. Seeing one man wearing a wig and a sequined dress is a little odd, but two in 10 minutes is a little unnerving. Now don't get me wrong, I have no problem with someone making their own rules about what is and is not gender appropriate attire. I am however a reasonable person and I was traveling through Kansas (one of the most red of all red states) and you generally don't see many men wearing dresses. If I were to guess what is going on, I'd imagine that the two sitings were related, and these two gentlemen were on their way to some sort of function where men wearing dresses wouldn't be frowned upon. The first thing that came to mind was a Cross Dressing convention. Then I began to wonder if it would be a Cross Dressing or a Transvestite convention. Are they the same thing? In my mind a Cross Dresser sounds like a less commited individual than a Transvestite. Is there a difference, or are they the same thing? Where do you draw the line? Did I see two Cross Dressers or two Transvestites? How would I have known? What are the criteria?