It's like a cross between a terminator and a baby turtle.
Here's a neat-but-creepy way to get an aerial drone to move at ground level: teach it to walk on its wings. That's what researchers from Switzerland's Lausanne Polytech are showing off: in the air, their prototype drone is a straightforward and familiar configuration, with a rear-facing propeller. On the ground, however, the …
1. Fly onto roof.
2. Crawl into place behind chimney/statue/air-con out of sight.
3. Poke camera around concealment.
Flying takes a lot of power. A drone capable of landing and moving to a hiding place nearby could operate for days on battery power, even weeks with a few solar panels and a power-savings mode. Just the thing for a stake-out, monitoring the comings and goings of people at a building. Someone can always collect it for reuse later on.