The explosion of these cars in aus is due to a change (now revoked) in the tax write off for work vehicles. The cap was increased to like 100k or something from like 30, so suddenly instead of a single cab ute you could by a dual can luxury vehicle as your needed vehicle for work.
So inefficient, the tax break was initially to reflect that you may need a second, specialised vehicle, to carry tools etc. Like a ute or van. Not so you could buy a stupid family car. So many households in my neighbourhood now have one of these and an SUV for mum and the kids. You don't need two giant cars per household!