Designers nowadays seem to be packing more and more parking spaces into the limited areas of underground garages serving large office buildings. So it would be very nice if
every car had doors like the ones in the video! We'd certainly get a lot fewer door dings.
I can see how a high-end luxury car might sport such an option, but wonder how high the cost would be even if all the engineering challenges were surmounted. Doors in vehicles today might seem crude and old-fashioned, but they're simple and cheap. Would the buyer of a medium-priced car spring for much extra to get the high-tech doors?
If bedroom space is at a premium, here's an option:
http://www.youtube.com/watch?v=tt14SLtej7c
These things aren't cheap, since the mechanism that operates them needs to be well-engineered and robustly constructed in order to insure reliability. The same would obviously be true of a car door retraction mechanism, but in the latter case, safety would of course be of paramount concern. If the TV retraction device fucks up, it would merely be an inconvenience. A vehicle door fuckup could be a safety issue.
Already exuberant regulators might get really energized over this one!