In my case, the Insight gets better mpg than any bike I've owned. (Well, except maybe the 305cc Honda that I had back in the '70s.) And nowadays the dogs want to go pretty much everywhere with me...
I found a certain sized cup would balance quite nicely between the gauges on the Gold Wing. With a straw it could be used with my full-faced helmet. But it's hardly worth it.
Google Images can't find the picture I was looking for—a Harley tank with a pocket for a beer can and another for a pack of cigarettes, but https://www.google.com/search?q=motorcycle+cup+holder doesn't lose focus all the way down the page and there are 8 sub-categories, so you know it's a popular thing to do.