Electrolux Fireplace by Camillo Vanacore. Electrolux Fireplace by Camillo Vanacore. The portable ceramic fireplace goes from opaque to translucent as it warms up and then becomes opaque once more as it cools down. Alas, it is only conceptual at this time.
RYNO Motors' single-wheeled electric scooter is self-balancing, has a turning radius of zero when stopped, & only takes up about as much space as a folding bicycle -- so it's conceivable that commuters could bring one onto a train.