Bass requires surface area and excursion (in and out movement) to be reproduced with volume. You can eq to make it more pronounced in comparison to the other frequencies, but you are still limited by the speakers physical characteristics for how low and loud they can play. Judging by the picture,these could maybe play down to 250-200 hz with good output. That's low enough to be a good midrange speaker, but it will still need a woofer to cover bass(20-80hz) and midbass(80-250hz). The good thing about speakers like this is that it allows for an engineer to design a speaker system with very good imagining. They can place these in spots in the vehicle where the sound should actually be coming from. With DSP(digital sound processing) they will be able to place these in a way that lets a car sound like it has a very wide soundstage. Doors for the widest sounds, the widest parts of the dash for most left and right content,and in the center of the dash for center stage content. Bass frequencies aren't as directional as the frequencies these will play so woofers in the doors or inside the bottom of the dash will sound convincing still. Sorry for the text wall, sometimes I get a little too nerdy about audio. Also, I'm going by the picture, didn't read the article. Edit: skimmed the article, what I said seems to be spot on. I would love to see a response graph for these.

TL/DR; They won't produce much bass, but they will allow for accurate sound placement in the frequencies that count for directionality.