The interior of the ELR is the nicest I've ever seen on a production car from General Motors. There are nice wood grains and different textures of leathers.
The ELR's sticker price is so high because, in large part, the car comes loaded with features including, besides the leather,a 10-speaker premium audio system, pre-collision safety tech and more.
I could criticize Cadillac's awkward Cue "infotainment" system -- in fact, I have -- and, yes, it is a little hard to get used to in this car, too. But I suppose you could get used to it.
