The Voltitude Ultra Folding Urban Electric Bike is a kind of neat little crossover bike with some great features. It is not currently in production as the company is looking for investors
Some of its features include: integrated lighting front and back, standard bicycle geometry (it doesn't look it but the site specs this out clearly), almost instant folding to an amazingly compact package (24 inches by 33 inches) that can easily be stored in your trunk (or boot as the site calls them) or under your desk, wide wheels for stability and ability to deal with urban road hazards (potholes, roadkill, taxis, etc.), integrated locking mechanism, strong hydraulic disc brakes. Its also electrically powered, has a 20 - 40 km range on a max four hour charge.
I'm not saying or suggesting this is the be-all, end-all to the world's transportation solutions but it could be a really nice solution to a great number of people who live pretty close to their work and don't really need a car.
The main downside I can see is that its a bit of a beast to carry at 40 to 50 pounds depending on battery pack. But the only time it would need to get picked up is to put it in a car trunk. Otherwise, it should be rollable even closed up.