I don't think it's a double entendre...

Last night as I was driving home from work, I happened to end up behind a tractor trailer with what I can only assume was it's corporate name / logo emblazoned upon the back of the trailer. The name was Semi-Express. I immediately laughed to myself, because it seems like that's not the name I would choose for my trucking company if my goal was to win customers based on the expedience of my deliveries. Granted, perhaps the person or committee who chose the name did so because of their use of tractor trailers (known in the biz as 'semi trailers') to make their deliveries, but I prefer to think that they were subtly hinting at their rather lax stance on speed as an important factor in delivering goods.