An anonymous reader writes "$5 doesn't sound like much for a day of internet service in some contexts: it's less than you might pay for it in-flight, and less than a few espresso drinks if you're lured in by a coffee shop's Wi-Fi service. But not all internet service is created equal; would you pay $5 for a month of in-car internet service if it meant a 200-meg cap, which is (only) 'enough to stream more than 6.5 hours of music?' That's where a new dedicated Internet service from GM starts (also at the WSJ, paywalled), and it's $10 for drivers who aren't also OnStar subscribers. Probably a more likely option for the occasional road trip, though, is $5 per day service (no OnStar requirement) for 250MB of data. Why wouldn't someone just use a smartphone with a data plan, or a dedicated hotspot device? GM thinks they'll be drawn to 'a powerful antenna that's stronger than that of a smartphone, along with a Wi-Fi hotspot that operates without draining a mobile device's battery. That hotspot is on any time the car is on.'"