Is the Audi Q9 the poshest Audi yet?

Audi’s new range-topping Q9 is the biggest, plushest thing the four rings have built yet, a seven-seat, tech-crammed luxury SUV squaring up to the Range Rover. Here’s what we know before it lands on UK roads. Audi has never been shy about going big, but the new Q9 takes things to another level. Audi says…