Stephen,
I'll say it again: "...IMO, your core product is not to track calls, so much as it's your ability to improve dealers decision making..."
Surely, we agree with this, that's what your reply is all about.
In your reply, you've mixed 2 different topics.
#1). Ad source measurement
#2). Sales operations (namely sale processes)
re: Ad source measurement
Sorry Stephen, I am aok with not knowing how many calls a FREE white pages based search is sending to me. Would I like it tracked? Sure, I love to measure everything! But as Dennis Galbraith from Cars.com said, I'll us my own words... not if the tracking number presents risk to my "Yellow Pages" traffic (i.e. "Chevrolet Dealer").
re: Sales operations (namely sale processes)
If Google Places gave me 25% of all incoming phone traffic, I still have 75% of the traffic from which to optimize sales processes from. Thats a truck load of calls to listen to. Heck, we ALL know that we can only listen to a fraction of the incoming calls anyway! (unless you have callrevu.com

.
If I were to drill into what I am missing the most from not tracking Google Places listing, it's probably service calls (ala white pages calls). Stephen, you track these calls specifically, am I correct? what are your thoughts?
Lastly, if I may address on last line you wrote:
"...one thing I've observed that successful dealerships have in common is they track every call coming into their store...."
From my seat, this is how I feel about your company:
"...one thing I've observed that dealerships that use Century Interactive have in common is they are very successful...."
Century's reputation is best of class in this arena and i've never laid eyes on your platform!