Our Japanese language lesson for today: In Japanese, the term "car sex" translates as... "car sex-ah." Car sex-ah is the theme here as a group of Japanese pornographers tools around Japan's congested auto arteries in a Toyota minivan with various horny Japanese honeys, getting it on in front of God, commuters and everyone.

A few things make this vid especially hot. First, there's the obvious exhibitionism/danger factor. Then there's the fact that the girls seem so innocent at first, but are in no time out of their tasteful duds and into some unusually fervent backseat depravity.

On this score, one scene stands out. Miari Mochizuki, decked out in the requisite Japanese-schoolgirl uniform, is featured in two sets of scenes tantalizingly intercut with one another. In one, she appears at various local landmarks, remaking upon them with the sunny officiousness of a Japanese tour guide. In the other, she smokes through some very involved motorway debauchery. The contrast goes to the heart of the allure had by Japanese women for lots of Western men - a smiling outward submissiveness married to a penchant for teeth-grinding raunch.