Keith, our former MTB captain, had an interesting couple of weekends racing road, and has posted his thoughts to his blog.
Let’s digress a moment to understand my perspective on this road racing thing: I’m a guy who races with big spacing at average speeds of 14mph; on dirt, which is soft; dodging trees, which don’t move; on a bike that eats obstacles the size of baseballs for breakfast. Now take this same guy and put him on a bike that feels like a toy, speed him up to double the pace, replace dirt with concrete and add a couple dozen clean shaven 20-somethings as fit and aggressive as they are squirrely bike-handlers to swarm about while whipping around in circles until everyone is blind from oxygen-deprivation. They tiptoe on the brink of disaster where the minimum penalty for failure is ending up like a lemon skin after an evening in a french kitchen. This is pretty much the definition of scary.
I strongly suggest you read the whole thing.