Philosophy is like starting a campfire by rubbing sticks together. It was great a long time ago, almost serves no purpose now.
I have more to say about this example as well, but I did not respond with my previous post because I was walking.
The example of fire is actually a good example, but not to serve your purpose (i.e., saying there is no place for philosophy anymore and that the practical has greater weight than the theoretical).
Early man got fire where there was already fire, and searching for sources of fire, as well as fuel to transport and keep the fire going, was probably quite time consuming and tedious, as early man would have needed to understand how to keep a fire going throughout the day and in the face of wind, rain, etc.. I imagine that, at some point, one man (and it probably happened on multiple occasions) noticed that when certain rocks strike other rocks, a brief bright flash occurred. Maybe he thought, "Hmm...this spark might be able to start a fire, and maybe I can reproduce this spark." That man, then, might have told the others, as they went out to again gather fire, that he was going to stay back and work on his theory. He might have spent the whole day, maybe multiple days, not only finding the right stones to strike, but how exactly to strike them, and how exactly to get that spark to start a fire. Practically, during these days, this represented an overall loss of productivity to the clan, since he could have been out helping to gather sticks and kindling, and searching for sources of fire. Yet, upon perfecting the theory and the technique, this resulting in massive time savings.
Moving forward, then, and as man moved to climates that were not only cold at night (the desert) but also cold during the day, keeping a fire lit at all times became crucial. Again, I'd imagine great time was spent gathering and covering sticks and logs, to keep them dry, but, even then, some downpours soaked the entire lot. Thus, I imagine that some men thought and spent time looking both into making certain materials impervious to water as well as inquiring into alternative fuel sources. Maybe someone in a northern coastal area, where whales were hunted for food, noticed that the more fatty parts of the meat caught fire when cooked. This person then might have hypothesized that this fat (whale blubber) could serve as a fuel source and, further, did not require dry storage conditions. This person then might have told the hunting party, or if he was in the hunting party, to not only cut up the whale and take the meat, but also to bring back all the fat they could bring. Of course, if the theory did not hold, this would be a huge waste of time and resources. Instead, the theory held, and a better fuel source was born.
Moving forward to your SUV example, I find this quite ironic. Early motorized carriages were very cumbersome, very inefficient, and extremely time consuming. They were not faster than horse drawn carriages. They were not cheaper to keep than horse drawn carriages. The maintenance was not less time consuming than the care of horses. In fact, early owners of motorized carriages were seen as little more than wealthy eccentrics. But, the theory that motorized carriages could be more efficient than horse-drawn carriages persisted and, eventually, cheap and efficient motorized carriages were born.
Finally, a personal anecdote. I remember the day when my elementary school got the world wide web. My class was ushered into the library, where we stood in front of a single computer, listened to the dial up, waited minutes and minutes, and finally connected to the web via Prodigy. Our teacher then asked what we would like to look up. Being Kansas, someone said 'basketball'. The teacher typed basketball and hit enter. Another ten minutes passed as Prodigy pulled up a desk encyclopedia sized article on basketball. The entire time (over twenty minutes) I spent constantly turning my eyes to and from the computer to the shelf, no more than fifteen feet away, of World Book Encyclopedias, specifically volume B, in which I knew an entry for 'Basketball' existed and which I could access quite rapidly. At the time, I failed to understand the excitement, expressed almost solely by the teachers and not my classmates, of this internet. At the time, it was practically near-useless. The theory, however, held that if resources were applied (that is, diverted away from other endeavors), the internet would, eventually, be practically useful, in fact very useful. But, if one always held that the practical is greater than the theoretical, then one would not get to the theory of the future practical value, and they would have discarded the machine in favor of the World Book Encyclopedia at that very moment.
And, since computer and the internet are all based on logical algorithms, a logic that was formalized in the early twentieth century by philosophers such as Wittgenstein, Russell, Turing, Boole, etc., then philosophy and theory was still an enormous impetus for great practical advantages as near back as the 1950s.
And, if you care about civil rights (maybe you don't), the civil rights movement in the 1960s relied heavily on philosophical theories regarding non-violent resistance. Non-violent resistance, especially in the face of violent, and very violent, oppression and repression is not exactly the most 'practical' approach, but faith was placed in the theory that it would bear practically beneficial results. And, this faith in theory was great enough that it held, even while many civil rights demonstrators were being beaten, shot with fire hoses, bitten by police dogs, etc.