Unfortunately the build quality is about the only good thing about it. The light is terribly weak. It takes a LONG time to charge and once it is fully charged if you pull it out it looses it's charge just sitting on the counter.
Most mobile phone also have OK lights on them too these days.
And this is one of several reasons why big companies don't go down this road. Nitecore are arguably one of the most innovative torch manufacturers, and even they didn't get very far with this. They came out with the VCL10, that other companies have since ripped off - https://flashlight.nitecore.com/product/vcl10Other factors include the inconsistent power supply from a car that is doing lots of short or stop-start journeys, along with any complexities from things like CANBUS, the potential for parasitic drain that leaves your battery too dead to start the car, right up to the additional risk of the thing exploding when left in a hot car...