[spacemanspif]

From my understanding of the way American, rear drive platform, transmissions work is that as long as the engine is spinning, the trans is being lubricated because the pump is turned by the torque converter. Whether you are in drive or neutral the pump still pumps. Once the engine is off (during EOC, perhaps) the pump no longer pumps fluid around to lube the trans components and once the trans fluid film on them heats up too much or wears off, you start to get accelerated wear (my guess is Audi did the math and figured out that the trans will OK assuming your stay below 50km/h for no more than 50km). Considering your wagon has a turbo, I wouldn't even consider multiple shut down driving... unless you want to ruin your turbo... so that the wife is more OK with you buying a bigger one