I must admit on my recent jaunt across the pond I was absolutely amazed at what people wear when they are on bikes.
Although you do get people inapropriately dressed over here I shudder to think how a pair of cut off jeans, running shoes, vest and really small helmet will cope with a spill.
It wasn't as though it was that warm and to be quite frank I thought the roads were pretty cut up around Massachusetts compared to other places I've seen over there.