Warp drives are widely perceived by the public to be the propulsion system of choice in the not too distant future. Engineers and scientists usually ignore the possibility because of the apparently insurmountable obstacles required to create a warp drive. The promise and the problems of warp drives are examined in three parts: 1) a review of some of the current literature, 2) a summary of the physics, and 3) the engineering developments required to develop warp drives.