Spiraling gas prices are just part of the affordability crisis that small business owners face, Mel and Mike Ohlinger write. (Wisconsin Examiner photo)Recently we paid $4.63 per gallon for gas while driving from Neenah, Wisconsin, to Nashville for our industry’s largest trade show. The trip is 633 miles each way. For years, loading up our company van with our booth and hitting the road was the affordable option for a small business like ours. No…