Another of my cherished tasks at this time of year is to referee the debate here about which of the honorees will be anointed with our grandest Grand Award, Innovation of the Year. I still remember with fond nostalgia the 2006 battle, when the $1.2-million Bugatti Veyron lost out to Bostitch's one-cent HurriQuake nail. And this year we had a similar contest, a duel between power and practicality, engineering audacity and design elegance, adrenaline and virtue. The Porsche 918 Spyder concept hybrid supercar was a tough contender, demonstrating that a top speed of 198 mph and a top fuel efficiency of 78 mpg can coexist under the same extremely beautiful hood. But even the realization of no-compromise motoring was not a match for our ultimate winner, an ingeniously simple and inexpensive green box that will make it possible to grow trees in the Sahara. To see why the Groasis Waterboxx is our Innovation of the Year, click here.