I think it's fine. I know for some it's a big turn on. While it's not so much of a turn on for me, I think if you feel the story should go that direction, then you should do so.

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Put me on wheels and I'll turn tricks.

Clever? Nah, I ran out of that years ago. But if you find this, let me know, k?
"The road goes ever on..." ~ Tolkien

In memory of my friend skip...
Go then, there are other worlds than these