Mobile workstations are specialised and expensive computers designed to provide high-end functionality in a relatively compact format. HP introduced the ZBook last year to take over from its popular ProBook and EliteBook series. This year's CES show in Las Vegas saw the introduction of a 14-inch ultrabook-format ZBook. While we wait for that to come through, we're looking at the 15-inch HP ZBook 15 G2 Mobile Workstation, which sells for between £1,313 and £2,854 (ex. VAT) in the UK depending on the configuration.
HP ZBook 15 G2 Mobile Workstation review at ZDNet
HP ZBook 15 G2 Mobile Workstation review at ZDNet