I would like a cart that I can use both on the bus and as a trailer behind my bike. In thinking about this it occurred to me that one could make several different kinds of carrying devices from a few different pieces that could be configured into different frames to support different fabric carriers. Such a device could be configured to make not just a cart and bike trailer, but a stroller, hand cart, dolly, sled and more. Some fabric carriers could be made to be used with more than one...

I think it would be nice to have a motorcycle helmet with an iPod adapter mounted directly on the back of it, so when passengers are riding with you, they can watch a movie, or listen to music. Simple, yet ideal.

Instead of buying " Support our Troops" or "God Bless America" Stickers write your own message to the screen. It could work two AAA battery and may be Flash disk on it and you can place it at top of the trunk that the people behind you can see the message, to hold the board magnets can work.

This idea sort of comes from the movie the 5th element but think its a really useful idea. Having a box within your dashboard or above to put your licence in means... - people only with licences can activate the car, this would get rid of unlicensed drivers - people on their L plates can have their times and mileage automatically added to their licence instead of having to fill in the book.

My co-workers always say that infant car seat carriers get very heavy when you lug your baby around very much. My idea is to put wheels on it and a handle, so that you can roll the infant once they're out of the vehicle. Sort of like rolling luggage or rolling backpacks.

Why can't my car automatically detect frost on the windscreen and automatically set a small heating filament to clear my windscreen before I drive off? Why do I have to run my engine with the heater on full blast, burning gas unnecessarily and polluting the environment at the same time? (Or maybe most cars have this already and I just drive a cheap car!!!!)

I think it would be cool to have clear plastic windows in the floors of cars so that the passengers could see the road whizzing along underneath them as they are driving along.

I'm not a scientist or inventor of any kind but it does make me mad when I park in a crowded parking lot and I come back to my car to see a ding in the side of it from someone opening their door and hitting it. This idea is very simple but it might help. Some type of pad you can put on the side of your door to keep other doors from hitting it. All it has to be is padding on a magnet. You can just stick the pad to your car when you park with the magnet. Then when you leave, you can just...

My idea is a clear car cover. This would allow me to sell a car in a way that keeps it clean while letting people still see its benefits inside and out.

A car that is windpowered. A small wind turbin on the top or even underneath the car, maybe even in the front behind the grill. Cars are always producing wind. Maybe even a car that could be regenerated just by the spin of the tires. Of course their should be a battery that can be charged at home, or even by solar. this is such a great idea, and could easily be added on to cars.