AT&T teamed up with Harman to offer this platform that works with most 1996 models and newer.

With HARMAN Spark, an advanced Connected Car Device you get Emergency Crash Assistance, Diagnostics, Location-Based Services, 4G LTE Wi-Fi Hotspot and More. AT&T exclusively offers HARMAN Spark for $79.99 and the rate start at $5 per month for plans without Wi-Fi. 

There is a limited time offer to buy Spark for just $29.99.3 by bundling with a Samsung Galaxy S9, S9+ or Note9 smartphone. Starting Sept. 28, you can buy HARMAN Spark at AT&T retail stores nationwide and online. 

 If you have unlimited data plans with AT&T you may qualify for the AutoPay and paperless billing credit. For single line it'll be $10 credit per month and multiple lines receive a $20 credit/month. All mode of payments used for AutoPay such as credit cards, checking and debit cards are eligible to get the credit. It'll take 1-2 billing cycle to see the credit after enrollment. Higher cost of unlimited plans can be reduced with this credit. It's worth exploring the unlimited plans since it also comes with many other perks like getting 30+ channels of live TV. 

You might be eligible for savings for your qualified AT&T wireless service through your employer, school, or other association. You can easily check this in AT&T web site instantly by submitting your work or school email address. If you are eligible, it'll show in your plan as something similar to '20% AT&T Signature Program discount included'.  It's a huge saving every month so don't let it go.