William Burrard-Lucas, a U.K. wildlife photographer, started working on a lion-pestering robot called BeetleCam four or five years ago. Essentially, it's a remote-controlled DSLR on wheels. There's a new generation of BeetleBot that now includes a video camera, and a forthcoming upgrade that mounts the entire setup on a gyro-stabilised camera gimbal.
BeetleCam may have started off as a sort of DIY project, but it's commercially available now, armored lion-proof carapace included. It's got four-wheel drive, can be controlled out to 500 meters, includes a battery that should last for a day of shooting, and can be rigged up for a remote control camera feed. The cost is $2,700 and up.