Really, the Roadside Assistance on credit cards tends to be limited to some version of "we'll call someone to come help you." Other than that, towing or help fees are billed to your card. I can get concierge to call a tow truck if I want, but it's faster just to call myself. 
I think AAA or even the cellular phone offered RA plans are much better. In fact, I'm a member. 
Just got the following email from Discover.
Mr. MORGAN, your Discover card's built - in benefits are streamlining on August 1, 2015
At Discover, we want you to be happy. That's why periodically review the valuable benefits that are built in to your Discover card. We have decided to retain some benefits - like purchase protection and price protection - and discontinue others.
What this means for you:
Effective August 1, 2015 Discover card will discontinue the following benefits: 24/7 Travel Assistance, Baggage Delay Insurance, and Emergency Roadside Assistance. If you have a loss or incident that occurs on or after August 1, 2015, it will not be covered by these benefits.
Want to learn more?
See all your card's built-in benefits at Discover.com/cardbenefits.
Mr. MORGAN, your Discover card's built - in benefits are streamlining on August 1, 2015
At Discover, we want you to be happy. That's why periodically review the valuable benefits that are built in to your Discover card. We have decided to retain some benefits - like purchase protection and price protection - and discontinue others.
What this means for you:
Effective August 1, 2015 Discover card will discontinue the following benefits: 24/7 Travel Assistance, Baggage Delay Insurance, and Emergency Roadside Assistance. If you have a loss or incident that occurs on or after August 1, 2015, it will not be covered by these benefits.
Want to learn more?
See all your card's built-in benefits at Discover.com/cardbenefits.
Thanks for sharing!!!
Gardening Until Further NoticeSorry that I was not able to read through all of the past threads 50000+ to see this.!!!!!! Funny how I have been with DC for awhile and just got the email this morning.
I just got the email too and losing so much, never used but still a big reduction in benefits. All of the premium stuff is being eliminated, adios airport lounge and concierge and special events and travel delay, etc. I guess my card is basically a regular account effective August 1.
