There are two people that have posted on these boards
that have done it or at least come close. Gerry Lindgren and Jim Bowles.
There may be others, but I'm not aware of them.
Lydiard found the 200 miles a week exhausting and he got
no improvement from it after six weeks, I think. He also
tried as low as 50 per week and found that not enough for
any noticeable improvement.
There is a passage in at least one of his books, in which
there was a period where he did 12 miles most days.
I know that Lydiard said the build up could be as long as possible in some of his later books that seemed to target people like me, recreational runners, but he seemed to consider about 10 weeks adequate for elites like Snell, Halberg, Magee, Baillee, Julian, Puckett, Davies and the rest. The hill phase that was originally around 6 weeks, then later shortened to about 4 weeks seemed to be around 90 miles and the following periods would have even less mileage.
The part of that book that recommended 100 miles a week at decent paces then supplementary running that would add another 10 or so hours of running was probably something Lydiard should have never stated or allowed to be printed.