The Knoxville Chamber of Commerce is offering businesses an opportunity to make their windows a little livelier. The Chamber has arranged for Frosty Harrington to paint sprint cars and other welcoming messages to race fans this week. Chamber Director Aanna Hoch says that if anyone is interested, thy just need to contact the Chamber. The Chamber will send Harrington out to the business. There are multiple design options. The fee is $50 per window.