I installed them as interior lighting in the center of the ceiling and in the front headlights of the car (bulbs).
Internally, they have very good intensity and color lighting, pure white 6000K.
The headlights have gained a very good color illumination, they look very beautiful now. Of course, there is no question that they bother other drivers.
As for their lifespan, I don't think there is an issue, they have a 6-year warranty, so they have many hours of duration....!!