In our experience, there are a few different types of concept/show bikes, so bear with us.
On the one hand, you get reasonably sensible offerings, like the Honda Hornet concept of a few years ago, or the Yamaha T7 rally racer. They have engines which appear to have the cylinders in the right places and pistons inside them; they use telescopic forks; and, most importantly, they have mirrors and switches. They look like they could actually work…
Then, you have the other end of the scale: wild-looking things, with clearlynonsensical design cues. For a long time, it would be ‘touch-screen controls’ and ‘rear-view cameras’ which marked out these show bikes as a load of old pony. Then it was internet connections in the early 2000s. More science fiction than anything…