As well as the gold-steel hybrid watch.
You've got what's called a skateboard in my California neighborhood, but in Detroit
this is a
skateboard ... or at least that's what GM called it about 20 years ago when prototyping electric vehicles

the skateboard turned into this

which was covered with a shell and became a car called the Hy-Wire (by the way the Tesla and many other electrics just happen to look like this under their skins)

It became a very impractical prototype! In those days, every journalist wanted to drive it (and every photographer wanted a long-legged gal to drive it)

Sorry to cause a diversion ...
Skate on!
Cazalea