If you're spending 30k, paying an extra 20 for a banker's draft is insignificant. And it's not like you buy a car every week. (I also can't imagine feeling safe carrying anything like that much cash around. What if you lost it?)

Banker's drafts can be an even bigger pain in the ass in the EU, with some banks charging percentages for them... And losing one of those tends to be a Bad Thing too.

Anyway, my point was that despite being rare the 200 and 500 euro notes are far from "absolutely useless".

I really struggle to see how it's useful to an ordinary person. You maybe save a little money, sure, but for a non-1%er the risk just seems completely disproportionate. I mean any dealer/business would accept a bank transfer, right? So it only makes sense in the first place for buying a car person-to-person (and for friends/family a bank transfer would work too). Carrying 30k to meet a more-or-less stranger who knows you're going to be carrying 30k? Sheesh.

Are banker's drafts the same thing as money orders? That's how I paid my cars; they are worthless if stolen (though if you lose them, the money's gone) because only the recipient can convert them back. Banks give them out for the same cost as withdrawing cash, which is a few euros.