Dying to get your hands on HP's TouchPad before it's available on July 1st? According to Pre Central, a visit to either Best Buy or Walmart may afford you the opportunity. During the past few days, the stores have apparently begun quietly displaying demo-loaded versions of the slate. The device went up for pre-order about a week ago, but for webOS hopefuls still contemplating whether to take the Palm-rooted plunge, a pre-release impression may not be a bad grab between socks and motor oil. Don't fee
