Free Idea # 315 - Power sockets at public place

Introduce power sockets on sidewalks, bus stations, parks where the public can access them. Users would buy a membership card which would allow them to recharge electric vehicles and power vacuum cleaners and electric tools at street level.

Free Idea # 314 - In-built tracking system at car components

Install, as standard, a resilient in-built tracking system in the engine, body, wheels, and other key components of every car, such that a cell phone or computer could track individual parts of the vehicle separately. This would allow the police, or an organization specifically created to track down stolen cars, to find them even after they have been abandoned, dismantled, torched, or crushed.

Free Idea # 314 - Tree limbs power generator

Manufacture cheap, tiny accelerometer-like devices to be places on the tips of tree limbs. As the wind blows the branch back and forth, the device's load would rock, generating power.

Free Idea # 313 - Location of movie

Embed code into movies which would relay the location of every scene on a map to mobile devices.

Free Idea # 312 - Collision warning system for cars and trucks

Create a collision warning system for cars and trucks. The sensor would measure its speed relative to objects in front of it and alert the driver of a possible crash. The sensor would even send an audible alert through in-car audio speakers and/or to the driver's cell phone (if one or both were being used).

Free Idea # 311 - GPS system for shopping cart

Add a small onboard computer and GPS system to shopping cart handles. The system would allow shoppers to select key items they wish to purchase and would then offer journey options, e.g. 'quick shop' - which would provide the fastest/shortest route around the store to purchase the required items, and 'calorie burn' - which would provide a deliberately circuitous route around the store. The LCD display would show key data: distance traveled in store, time taken, average speed, estimated calories burned, etc.