Let's add to the list of why women don't cycle with mens attitudes towards women. Don't know what I mean? Read through this thread. If men think women are too (fat, vain, self concious, insert whatever excuse you want here) women are going to think that if themselves and won't do it.
Interceptor, those are some very neat looking bikes. Sadly, they aren't exactly something that you can walk down to your LBS to get though. Acessibility of equipment that will work for a family is an issue.