-------- Update November 2015: Looks like the links to the PowerView reports are no longer functional. I'll see if I can find a replacement --------------
Really pleased to see there's a SharePoint Claim-Enabled site available to anyone with a Windows Live ID to experience how cool Power View reports are:
That's the link to a blog which links to the reports. My personal favorite is https://businessintelligencedemoportal.com/sites/autosales/SitePages/pvrsample.aspx
Maybe it is a "Duh!" moment for some of you that this data set may show you that when the price of gasoline goes up, the sales of hybrid vehicles goes up. And when the price of gasoline goes down, the sales of trucks and SUVs go up.