DEEP Robotics makes four-legged robots starting at $2,800. They’re now equipping one model with a CPR machine, oxygen, and a heart monitor to help respond to emergencies faster.

Here's a video of the robots moving over new terrain they’ve never seen before. Here’s more info on the medical-equipped models.

It looks like these robots could cover 500 meters in just a few minutes. At their current price, it might be worth placing them all over cities. If they had a 911 audio link, the closest person nearby could use the CPR machine on heart attack victims until paramedics arrive.