PC World – The Droid X appears to be an opening day hit. Motorola’s new smartphone–Verizon Wireless’ answer to the Apple iPhone 4 via AT&T and HTC EVO 4G via Sprint–has already sold out online and at various retail shops across the nation. The ongoing iPhone 4 antenna soap opera has no doubt helped spur interest in the Droid X, as have positive reviews and Verizon’s aggressive and snarky ad campaign.