I'm trying to remember the opening... was that in the milk bar or in the sports car? And what do you mean grueling? It's not like it's boring (which is a connotation I connect with that word).
I've seen Ichi the Killer on my cable guide, but haven't watched it yet. I became disappointed on learning that it wasn't about legendary Zatoichi: the blind swordsman, who has inspired many movies. I've watched all of them (as far as I know) and would like to see more. If anyone here likes non-typical "samurai type movies" then I highly suggest anything involving Zatoichi...especially starring Shintaro Katsu.