When you go to pick a car name, or in this case a special edition, do it with a word that doesn't have two spellings. The official name for the new SVT performance Sport Trac is Adrenalin, according to their press materials. Yet writers everywhere, including this USA Today article, are spelling it Adrenaline. Both spellings of the word itself are correct according to Dictionary.com. Does it really matter? Not to most people, but for web searches this name spelling could halve the results for interested buyers. That's never good.