You should try Austrian trains… I was on one from Bregenz to Lindau where we had to change. The Austrian train was like something out of Star Trek. In fact it was powered by DiLithium Crystals because it was stationary at the platform then just accelerated away with no engine noise, no wheel noise, just a strong force pushing you into the seat. Sadly the German train was like most of the UK stock, noisey and old and wasn’t air conditioned. The Austrian one was definitely from the 23rd century!