I would guess than a very small percentage of people who raced and received free product have even visited this board. If you were looking for more feeback, the paddock is where you could have gotten it.
I liked the stuff, although it is a bit fruity and definately did not give me the jolt that Red Bull does. I'd consider buying it for $1/can, but vs. Red Bull I'd go with the Bull if it were available. When I drink that kind of drink, I am usually looking for a burst of energy since I don't drink coffee. I don't think Magic is as strong.
Thanks for the free product!