There are some 150 million vehicles on the road that aren’t at all connected. To tap it, Verizon launched Hum. A questionable name perhaps, but a potentially very useful service. The service, which Verizon announced earlier this year as Verizon Vehicle but rebranded before launching it today, taps your car’s on-board diagnostic port, and conveys information through a Bluetooth-enabled speaker clipped to your visor. It works with most cars (electrics and diesels excepted) and any carrier and costs 15 bucks a month.