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Jessica Scorpio struggled for years to get her company, Getaround, off the ground, largely due to one massive roadblock. Getaround is a car-sharing marketplace on which car owners can rent their vehicles to anyone else in the program.

Those hours you spend driving each day will soon be interrupted with contextual advertising, pointing you to that Starbucks around the corner or the McDonald's just down the street. Imagine this: You're taking the family for a ride in your new Toyota, when you experience something unnerving

First you had to pay to drive into the city center.

People aren't so gung-ho about smart meters, but they are about electric vehicles. But when they realize that combining the two can lead to huge savings, things might change. With so many promised benefits to the adoption of smart grid solutions, I have been conducting a lot of research lately on why it has taken so long to get the smart grid on track in North America.

People need to move around, but we can do it in a less impactful way with these five innovations. Some are new and some are old, but together they could remake transportation.

Idling delivery trucks are a huge congestion causer in tight downtown areas. In Utrecht, they've eliminated the trucks and replaced them with a solar-powered golf-cart-sized delivery train. How do you sustain the commercial heart of a city without clogging its arteries?

To resupply Arctic mines and oil rigs, roads are expensive (if not simply out of the question).

Whether you have a few company cars or a fleet of several dozen trucks, you can save money on fuel by making minor changes to your operations and driving.

Transportation Secretary Ray LaHood got a spanking when he suggested one, but test programs have received positive responses from drivers. Like it or not, with gas tax revenue declining it may be the only option. As vehicle fuel efficiency increases and hybrids become more popular, governments are running into a problem: they're making less money from gas taxes.

NEW YORK--A magnitude 5.8 earthquake that shook parts of the mid-Atlantic U.S. and New England Tuesday afternoon sent workers and residents streaming outdoors. In lower Manhattan , surrounding the Scientific American office, vehicle traffic quickly came to a standstill--with New York Police Department officers ordering drivers to back their vehicles out of the Holland Tunnel

After a year of Zipcar availability in Baltimore, a survey finds that Zipcar membership means less driving, more public transportation, more exercise, and better quality of life for everyone. Zipcar debuted in Baltimore a year ago. The company has since gathered feedback from the new Zipcar drivers there to determine exactly what happens once car sharing is introduced in a city.

Get ready for the newest way to grab some wheels when you need them. The service, launching in November in San Diego, is gunning for Zipcar by making it easier to pay for and drop off your borrowed car. Zipcar has long dominated the city car-sharing space.

Even though it's off the market, Tesla tells us they haven't given up on electric-powered speed machines. "The Roadster proved that EVs can outperform traditional combustion vehicles while producing zero emissions," says Tesla's Khobi Brooklyn. Say what you will about perennial electric vehicle startup Tesla Motors --the Roadster convertible changed the mainstream perception of EVs from clunky golf carts to sleek vehicles that can actually be driven on highways

The government-sponsored competition to build the best ultra-fuel-efficient vehicles yields both automotive innovation and the next generation of car designers.

How many miles will an electric car go on a gallon of gasoline? This is not a trick question.