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I'm sure it'll come but I'd love to see a petrol powered version of this with a USB plug for an android phone. You can add all the sensors you want (LTE, gyros, gps) via the phone, and the range would be amazing by using mostly the wheels, then the rotors just to get over obstacles.

Would actually be pretty good for park rangers, border control, protecting large industrial complexes (unpredictable camera points with computer vision to locate human movement)

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I'm not sure this would work; the phone will introduce a delay in the feedback, and this can be bad, and also, the sensors need to be placed in fixed positions for the best response (the gyro is usually placed right in the center).

Also, petrol/nitro engines are not the best for this kind of job, as it needs a very fast response in rotation speed and fuel engines have a high latency. What you can do is use a fuel engine as an electrical power generator or use variable-pitch propellers to get a faster response.

Sensor position is, mostly, irrelevant. You obviously get better performance with they sensors at the crossing point of all the motors, but it's entirely possible to put the sensors on one motor pod and calibrate it to fly with them in that location.

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