I was thinking recently (after my previous post) about the stories I remember reading in the magazines Galaxy and If in the early 1970's. One story from that time was called "Fusion" and I recall it quite vividly. Sadly, I don't remember the name of the author or the publication date or even which of the two magazines had the story, although I assume the story was in Galaxy because it was definitely in the science fiction category.
It had to have been published prior to the Summer of 1973, because I know I read it while on vacation then. The story was about a popular auto race in which different types of cars competed against each other, with the winner being chosen for production (I think that was the prize, but it may have been that the audience purchased the winner's type of car). The race itself was a no-holds-barred, almost demolition derby event in which the drivers were often killed. The protagonists of the story drove a fusion-powered car. Thus the title.
It was a very entertaining little story and I'd like to find it again, but I donated my old Galaxy and If magazines to the local library when joined the Navy. I can find no lists on the internet of the old publications. I can also find no reference to a short story with that title.