| 摘要 |
An improved system of the type having a ball or sphere and within it a remote-control powered vehicle, has provisions for determining vehicle orientation for more efficient control including one or more of: transparent ball portions, color ball portions and forward-illuminating spotlight; ability to store the vehicle with the ball inflated is provided by a mercury switch which turns off power when the vehicle is inverted; angle strips improve traction externally and a soft, semi-inflated ball is used for better internal traction between vehicle and ball wall; charging of vehicle batteries through the ball wall is disclosed.
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