Gibson hosts celebrity demos and Q&A sessions, open to the press and the public, with some of the world’s premiere musiciansAcross the globe, Gibson’s revolutionary Robot Guitar will go on sale at 5 p.m. on Friday, December 7, 2007 with a very limited number of guitars available at each of the participating dealers. But first, Gibson is hosting demos and Q&A sessions, open to the press and the public, with some of the world’s finest, best-known musicians. Check to see which famous musician will be demonstrating the Robot Guitar in a town near you.Hollywood, CAThe Goo Goo Dolls’ Johnny RzeznikM