A number of different Lightning-based car charging solutions have been released over the past two months, but PureGear's Car Charger with USB Port for iPhone 5 ($30) is intriguingly different because of its extra USB port and aggressive price. Notably specific to the iPhone and iPod, both the Lightning plug at the end of the coiled cable and the port put out 1-Amp of power, enough to charge an iPhone or iPod at full speed. iPads and iPad minis can…