It’ll run 197 mph with the top down. What’ll that do to your ‘do’, asks Road Test Editor Howard Walker. Ponder this for a sec. Porsche has just announced its brand new 911 Turbo S Cabriolet that has a top speed of 197 mph. My question: What does 197 mph actually do to your follicles?  After, say, two miles do you have any left? In response, maybe there should be a Hair Club  For Men Special Edition model so you can swing by for follicle replenishment after every  190-mph to...