General Motors Proving Grounds, Milford, Michigan -- We have been here many times before. Usually, it’s to see static displays of new car and truck models set up under a big white tent, and go through the ‘dog and pony’ show of palming the flesh of executives, engineers, designers and marketing managers. They strut like proud mammas and papas after the birth of a new baby and scan your every eye blink to assess your level of interest, chart your enthusiasm or indifference, and predict your questions or haughty observations during the formal Q & A.

But this time it’s different. This time, there is a palpable excitement that zings through the outside air that is heavily laden with moisture and drizzle. Who could dare to not be electric at this moment, I think, as I look up at the storm clouds for hints of lightning. This nervous energy isn’t about seeing a true icon of America, skinned, with parts displayed like fine art under the Big Top -we’ve all seen it, in spy photos and auto shows, for what seems a long time. Many of those have been either leaked, or shared directly with the press.