Actually you can stop the slideshow, it's just that it takes a bit of time to work out that there is a little 'home' on the broad black strip across the bottom along with the address and phone number.
Watching the slides is a bit like riding a horse which is cantering slowly along – it's an hypnotic pace. The screen-wide image goes momentarily black before then next one appears and there is that little shudder you get with the mechanism of an elderly Kodak Carousel. So a touch of nostalgia there.
There are more than 80 of these mini-slide shows and the mesmerising equestrian pace is, if you have to have slide shows, just about right. Now they have to decide whether to radically edit the text or break it up and run a sentence with each frame. Personally I'd just leave it out.