All of the early Honda S-series (S500, S600, S800)
http://en.wikipedia.org/wiki/Honda_S600 had pressed-up cranks, with needle roller big-ends and mains plus single piece con-rods. This was very much in line with Honda 4-cylinder motorcycle practice of the time and the motors had lots of similarities (but no common parts that I'm aware of).
Sweet little engines that revved to the sky but very sensitive to proper maintenance i.e. clean oil and correct type and quantity of it. Unfortunately many S-cars in Australia now have various Datsun etc motors in them
because of poor care of the original motor.
I've owned 6 of these cars (in various states of disreputable-ness
) over the years although none at present. My last S600 Coupe sits in my brothers shed awaiting it's time for restoration.
To my mind, the pressed-up crank will have some attractions for someone building a motor from scratch i.e. model engineering etc, but little to reccomend it otherwise as the assembly and maintenance difficulties will probably outweigh the manufacture advantages.
Dominic