AUTHOR COMMENT: ‘A’ or ‘An’, that is the question

When I’m not working I read a fair amount, and I enjoy the big names just like everyone else.  So I was surprised when I saw one of these big names referring to ‘an SUV’.  I thought it must be a typo but it was done more than once so I guess it must have been on purpose.

So, I was reading another book by another author and guess what? The same thing.

Now, SUV stands for ‘Sports Utility Vehicle’ so in my view it should always be ‘a SUV’ and not ‘an SUV’.  Surely you climb aboard a sports utility vehicle and not an sports utility vehicle? You go to a sports event, not an sports event. 

Funnily enough, Word spellcheck highlights ‘an’ when you type ‘an sports utility vehicle’ but not when you type‘an SUV’.

What do you think? Am I wrong?