(Yes, I’m watching the 2-woman Bobsleigh event.)
I grew up calling the sleds ‘bobsleds’. Over the past three or four Winter Olympic Games, I’ve heard them called ‘bobsleighs’. That term is creeping into my use; but I still like ‘bobsled’.
How long has ‘bobsleigh’ been used in U.S. Olympic coverage? As I said, I was not familiar with the term until about a dozen years ago. I don’t remember hearing ‘bobsleigh’ growing up. (But I did ride the Bobsled at Disneyland and the Sarajevo Bobsled at Magic Mountain.)
I have the same question about ‘snowmobile’ vs. ‘snow machine’. I never heard the latter until I moved to Washington.