swivelとvis-à-vis

1月12日に開幕したデトロイトモーターショーでMercedesが自動運転車のコンセプトを発表しました。シートを回転させることがき，向かい合って乗車することが可能になるようですが，座席の向きについては「乗り物酔い」と「安全性」の面で議論の余地があるようです。
記事ではシートを「回転させる」はswivel，「向かい合わせ」はvis-à-visを用いています。どちらも以前にブログで採り上げられています。
cf. http://d.hatena.ne.jp/A30/20100826/1282780187
cf. http://d.hatena.ne.jp/A30/20130715/1373820355
辞書にはswivelは「…をさる環で回転［旋回］させる」，vis-à-visは「（…と）顔と顔を突き合わせて（いる）, 向かい合って（いる）」とありました（『プログレッシブ英和中辞典』小学館）。ちなみにswivel chairは「回転イス」のことを指しますが，一方で「管理職の象徴」（『スーパー・アンカー英和辞典』第4版，学研教育出版）として用いられることがあります。（Koyamamoto）

Automakers Rethink Seats for Self-Driving Cars
DETROIT — As self-driving cars become increasingly real, automakers are already reimagining how passengers may actually ride in the cars, without the need to pay such close attention to the road.
In at least one case, envisioned by Mercedes, the design would borrow more from the vintage carriages still on the road in “Downton Abbey” than briefcase cars in “The Jetsons.”
The Mercedes F 015 Luxury in Motion concept car, on display at the North American International Auto Show in Detroit, features what the company describes as “four rotating lounge chairs that allow a face-to-face seat configuration.” In other words, the driver (and front passenger, too) can swivel around and make direct eye contact with the people in the back.
This concept actually goes back a long way. Horse-drawn carriages commonly offered vis-à-vis seating for passengers, and it has been a feature of self-driving car fantasies at least since the 1950s. In the late 1960s, Chrysler Imperials could briefly be ordered with an option that included a swiveling front passenger seat and a folding table for on-the-road business meetings — a kind of precursor to the custom conversion vans of the 1970s.
http://www.nytimes.com/2015/01/16/automobiles/automakers-rethink-seats-for-self-driving-cars.html?hpw&rref=automobiles&action=click&pgtype=Homepage&module=well-region®ion=bottom-well&WT.nav=bottom-well&_r=0