In an era of mass-transit bombings, efforts persist to reinvent single-occupancy vehicle transportation. There's the Skycar -- recent darling of the TED Conference but also a failed concept for four straight decades. Then there's Personal Rapid Transit, which is also starting to look a bit long in the tooth, but also a transportation mode with a long string of failures behind it. My opinion: We can't engineer our way out of terrorist threats to transportation. We also can't afford these more exotic "personal transportation" options. Instead, can society gather the will to use technology to better regulate the existing motor vehicle highway system?