Mike Spinelli

For around 13 grand, Electric Cars of Springfield (ECOS) will turn your old beater into an all-electric commuter car. But for a few bucks (around $77,000) more, they'll build you an entire, turn-key sports car. It's called the Harbinger. It hits an electronically limited 117 miles per hour, gets to 60 mph in five seconds and undercuts the Tesla roadster on price. Did I mention it comes with Lamborghini-style scissor doors?

A team of solar-car scientists from Japan's Tokai University turned the intense rays of central Australia into victory in the 2009 Global Green Challenge. The team covered nearly 1,860 miles over four days in their solar-powered Tokai Challenger to claim first place among the Challenge's solar-vehicle field.

A recent ad for Vodafone featured Formula One champ Lewis Hamilton piloting his F1 steed, as if it were an RC car, using a Bluetooth-enabled smartphone. Many were fooled, some were not, but really it was just a wishful-thinking play by clever ad people.

But one such convergence of smartphones and automobiles apparently is legit. Computer science researchers at Berlin's Free University worked up this Chrysler minivan that can be controlled remotely by an iPhone app.

Imagine millions of plug-in vehicle owners returning home from work on a hot summer day, plugging in their cars at the same time, and melting down an overtaxed, outdated, and otherwise atrophied electrical grid. But the geniuses at Google say averting a disaster scenario could be as simple as a few lines of code (well, a few more than just a few).

Imagine pulling into a service station, but instead of filling the tank with unleaded, you slide out your drained battery and -- for a fee -- slide in a fully charged one. It's a similar model to that many stores use for propane tanks, and it could one envisioned for Tesla's new Model S sedan. Edmunds Green Car Advisor reports the new model was designed with swappable batteries in mind, according to Tesla's outgoing director of vehicle engineering and manufacturing.

As a fuel for cars, compressed natural gas hasn't exactly exploded in the US. Of all the major automakers, only Honda offers a CNG-powered car, buyers of which are eligible for a tax rebate and get a free pass on the carpool lane in most states. But proponents of CNG say the fuel that's common for buses and fleet vehicles is not only good for commuter cars, but for flamboyant customs as well.

Electric-vehicle startup Myers Motors already builds a one-seat electric car with three wheels. Now, the company says a new model is on the way with something extra novel -- a passenger seat. Dubbed the NMG2 (the first model is called NMG), the part-car-part-motorcycle will also get more storage space, creature comforts like air conditioning and a 60-mile range on a charge of its lithium-ion battery.

India's Reva electric car company has a UK hit on its hands with the diminutive G-Wiz, an increasingly common addition to London traffic. This year, the company will introduce a new model, the Reva NXR -- a four-seat, three-door hatchback -- and plans to unveil a two-seat sports car, dubbed NXG, at next week's Frankfurt motor show. But what's got the electric-car world talking is something the company calls REVive -- a new feature purported to allow a driver who finds himself with insufficient battery charge to get an "instant remote recharge."

Could Reva be ready to roll out an inductive recharging system that would work over the course of miles instead of just a tabletop? (And is Japan involved?)