http://youtu.be/x_PrT25o8Vs
I'd rather watch volleyball girls sponsored by seat, at least its a vag topic then.http://www.youtube.com/watch?v=bwN-XDjGMloAuto-erection
But for the purest engine experience, displacement has no replacement. All other methods are simply attempts to artificially recreate the benefits of displacement.
I don't think a semi will give the same results