Got bored and packed in the flying on Sunday, while I still had one battery left. As I got back to the car, I could hear the sound of petrol/nitro/whatever models, and saw some guys had some R/C boats on another part of the lake. Went over there, and then asked if they'd like some aerial shots of them. One was really bummed, as he couldn't get his running, but the other happily fuelled his back up and put it in for a spin. I'm no expert at chasing moving objects, especially when I have no idea which way they'll move, but wasn't too unhappy with the results, and when I emailed them a link to the stills I'd grabbed from the video, they were thrilled and want to meet up again. Anyway, if you're feeling REALLY adventurous you can crank the playback right up to 4k.