The way that people talk about gender make it sound like it's purely biological and immutable. Boys and men are aggressive, driven by their biological urges, and competitive; girls and women are passive, reserved, and gentle. What this idea misses is that gender is a social construction that has changed over time, and is shaped by many different forces. One of those forces is from billions of dollars in advertising.
At first glance the Infinity "Reverse" commercial seems rather benign. People get into accidents going in reverse, the QX60 has technology to help prevent them. Seems fair enough. Then you look at the examples they chose to use. In the first example, a White man, going home from what looks like the end of work (business suit, has a briefcase) hears the beeping/sees the video, and stops in time to avoid an accident, and looks frustrated with the bad driver who almost hit him. In the second example, an Asian woman (probably a mom judging by the two girls in the back seats) is backing up, doesn't hear/see the school bus coming, and the car breaks itself, and she steps on the breaks after the car has already stopped (and when it would have been too late). The two girls look at each other like "Oh my goodness you almost killed us!" and the woman gives a sheepish look like "Ooops, did I do that?!" Right off the bat, we have a man so he's about work and business, and then we have a woman, so she's a mom (and of course well dressed, thin, and attractive) because that's what women should aspire to, being mothers and physically attractive.
Although it is nice to show non-White individuals in a luxury car commercial, why did they have to be in an example the reinforces racist stereotypes of Asians and women as bad drivers? Why did the White man get to be the responsible, pro-active driver? I highly doubt there was any malicious or racist intent in the creation of the commercial. My best guess is that when they were casting the parts, these were the people that seemed most "right" for the parts (or to the writer/director before the casting even occurred). It's the subtle forms of racism and sexism that are so insidious, because they shape things like these commercials, which in turn, reinforces the racist attitudes that created the commercial in the first place. Racist attitudes seem normal, so they make it into media - racist messages in the media then reinforce these messages and so they continue in people's daily lives.