Instead of developing cars which depend on massive gasoline burning engines with very small batteries, create a small car with a powerful battery charged by a very efficient infernal combustion engine to charge the large battery. Surely a small engine could charge the battery sufficiently to do commuter trips every day.

Main features: * 2-3 kitesurfing type sails * 2 catamaran hulls * hydrofoils under both ends of each catamaran hull * some kind of deck to hold passengers and cargo Details: * the kitesails would be staggered from front to farther back (exact locations need to be worked out) * the angle of attack of the sets of hydrofoil blades on each corner would need to be controllable to facilitate the boat rising out of the water for less drag but not getting tipped over by gusts of wind *...

You always hear people saying, "In the future there will be flying cars!!" Well I think that idea is ridiculous. Why re-invent a flying machine when it would be much more simple to make a planes street legal. We already have compact airplanes with the ability to fold the wings making them more compact.

Wouldn't it be nice if someone could produce a Portable Shopping Cart on the lines of a Twin Stroller. As a parent I sometimes find it frustrating loading the kids into the car and unloading the cart, then having to leave the cart at your parking spot, which is a big pet peeve of mine. It is also hard to find a cart that has a dry kid seat when it is raining.

The start of an airplane consumes a lot of energy and is very stressful to the tires. An airplane could be started (and landed) sitting on a magnetic driven carrier which is accelerated by a linear motor installed in the runway. This method will save fuel, tires and reduces noise at airfields dramatically.

I do like the idea of Tunnel Taxi and really want to share with you. Tunnel Taxi is designed for solving problems with traffic. It's a split bus style taxi with a pair of seats on each side that exit into a central tunnel. That central tunnel is there to allow people that ride bikes around the city to pass in the middle of the taxi without having to change lanes.

Why not create a dual-cable lever for bicycles to allow riders with one hand to control the front and rear brakes on mountain and cyclocross bikes. The lever will be adjusted to engage both brakes at the same time or one a bit after the other. There will also be the option either to place the lever on the left or right side of the handlebar.

Self-steering tractors that can travel the fields with the same skill as trained drivers may soon make farms more efficient. The tractor will rely on a GPS system and other sensors to maintain its positional awareness. Specific sensors calibrated for different terrains will allow the tractor to traverse a variety of areas, and the 'smart steering' system will be able to calculate the optimal speed and turning radius.

The bicycle GPS tracker will sound an alert if the bike is stolen, and then help you track it down and recover it. The bike GPS will mount inconspicuously inside the headset of the bike and will be secured by a special wrench. When the bike is parked, the user will active the GPS unit with an electronic key, which will turn on the vibration sensor. If the unit senses vibrations when it has not been turned off, such as in the case of being stolen, it will sent an alert through SMS...

The wheelblades are designed to give wheelchair users more traction and control for better mobility through slush and snow. The wheelblades are basically mini skies that attach to the front wheels of the wheelchair with a clamp lock. The skis spread the weight of the chair and occupant over a greater surface area, increasing stability and reducing sinking and slipping. The wheelblades can also be used with strollers, and the clamp lock can adjust to fit wheels of varying...