Brian is fairly accurate. I've seen this in a couple of dealers a couple years back when I was selling into them. One dealer, new to the store, a partner was very excited about this and when he explained, I was to total shock anyone would agree to this. The whole cold email thing is very sketchy.
He did cover what I saw over the next few days. The Google analytic stats where off the chart and with nothing to show for it. They made no sense and I had to really dig in to see what was really going on.
In the end he may have sold a few cars, I don't know. I do know spending that money and building your brand, reputation and goodwill in, for him, a new market would have yielded on going goodwill and results. The way a business is built.
Digital marketing has to be a large portion of your marketing. Today, you really need to get on top of your reputation marketing, social marketing... and have someone on board that really understand Google analytics and can A/B test the hell out of everything.
I will leave you with this. Email marketing is your absolute highest ROI. This is to your own clients.
John