@BMWgirl - make sure your web page has market differentiators on it . . .The "XDealer Peace of Mind Guarantee", "No charge Oil Changes", all those things that show your dealership has a competitive edge on the competition. Just having pics of vehicles and the stats does not make you different or provide any value to the consumer.
Instead of those very frustrating and inconsiderate live chat drop downs the minute you hit the site, have a banner telling customers to browse without fear of being attacked. When you're ready we'll be happy to answer questions. After a few minutes you can have a pop up that says "if you can't find the perfect model, let us know what you're looking for (collect web address and model requested).
There are dozens of ways to present value to the consumer. Don't be afraid that they may not immediately engage, or they leave the site. If they're for real, they'll be back because you have shown a difference.