Here is the reponse on whether or not to detail out your X if your showing at the Auto Show...

**UPDATE**

Regarding the
condition, I think if they have dirt on them it should be OK. It is a
very subjective measure, but we wouldn't mind if they looked like they've
gone through some mud lately. In fact, I believe in the past for
displays such as this, we have put some cars through mud on purpose. I would
have to leave the condition of the vehicles up to the individual
owners. If the vehicle has some mud but looks "presentable," then it should
be OK. IF it has mud all over, and the windows are dirty and generally
looks junky then that is another matter altogether. I hope this makes
sense!!