Eventually a new 4x4x4 Bld PB: 7:54.48 (3:47.40)
This outperformed my old record by 52 seconds.
While I was sitting in the train (Work), I thought I start practicing my LPL, so I started memorizing the centers, I was so fast (~1:30) that I quickly memorized edges and corners with the old technique and then solved it with speed. I don´t have the scramble, because it was hand-scrambled (It was non lucky, 8 centers solve, none edges or corners).
The funny thing about the solve was, that I didn´t closed my eyes, I just looked around to the landscape, to an old couple, who got into the train, ... I think I get better times with that.
Also last time when I solve a 4x4x4 in a train I was sub 8, but DNF because of 2 swiched center pieces.