If you want in on the connected car action but your vehicle is nearly as old as the internet, Verizon's new Hum service may help. It's a $15 per month plan that includes an iOS or Android smartphone app and CDMA-enabled hardware that plugs into an OBD-II port, something all 1996 and newer vehicles have. (The port is also used by Automatic Link and other apps.) The device gathers engine diagnostic data and relays warnings to a visor-mounted speaker device and the smartphone app. If something's wrong, the app can provide more info and even an estimated cost for any repairs.