If I remember correctly, the current rules allow gearing for division C, but not B. After searching the internet for over 3 hours, I had not found a plethora of info/resources. The photos/video I linked to were the only decent ones I found.
There's no question more resources are available today than 7-8 (possibly more) years ago when this first came up. With the advent of re-chargeable electric airplanes/cars in the market, it may not be a problem; however, The availability of resources should be verified as this problem has occurred before (e.g. Mars Map/Remote Sensing).
If anyone has more info, I'm sure posting it here would benefit the future of the event.
Information expressed here is solely the opinion of the author. Any similarity to that of the management or any official instrument is purely coincidental! Doing Science Olympiad since 1987!