Honda originally targeted police forces and other institutional fleet buyers as the initial market for larger displacement Hondamatic bikes, with the general public to follow.
However, though the bikes were solid and easy to use, they had trouble breaking in to the Electra-Glide dominated police fleet buyers.
Even today there's a market demand for bigger automatic or CVT bikes as evidenced by the growth in "Cruiser Scooters" from 450-650cc.
So the CB750A is a fairly interesting and rare bike...anyone who has one is (in my book) fortunate indeed.