It's short for Soichiro Honda, the name of the person who founded Honda.
Honda is a brand of car. They are headquartered in Japan but build most American cars in America www.honda.com
No better or worse than any other major brand oil. Honda does not refine oil, they buy it from a major oil company that puts their name on the can.
The Japanese guy Soichiro Honda who built the first Honda motorcycle in the 1940's.
not many thankfully I have to profoundly disagree with the above answer! I have owned 3 since my first brand new one in 1985, and currently drive a 1988 and I LOVE it. I get offers to sell it all...