I'm headed to Riverstone Park this evening to see the next-to-last freebie concert, sponsored by the Coeur d'Alene Arts & Culture Alliance, featuring bluegrass music by Panhandle Polecats. The entertainment runs from 6 to 7:30 p.m. Food is available, too. If you haven't seen an outdoor concert at Riverstone, you are missing one of the highlights of summer living in the Lake City. Trust me on this one. Now, for your daily Wild Card ...