Certain Space Marine squads (as indicated in their army list entry) can use Rhinos and Razorbacks to move rapidly across a battlefield. Neither vehicle counts as part of a squad or uses up any choices on the force organisation chart.
Blood Angels Rhinos and Razorbacks follow all of the rules and options given for the same vehicles in Codex: Space Marines. In addition, they are also fitted with over-charged engines. See the Blood Angels Special Rules section for details.