As usual car manufacturers and their marketeers like to speak in superlative degree. That sometimes makes it hard to come to a translation that approaches the original close enough and still makes some sence....
But apart from that, this phrase sounds like a subtitle, and if so, I would ignore the term 'Building' (that part will be clear given the info source and context). That way you get a brief and meaningful headline.
If I am mistaking here, you can forget about the comment above, but still use "jenseits aller Vorstellungskraft"