There's something missing on most automotive mobile websites and apps. Everyone has "Get Directions". Most attach to the device mapping app to allow for navigation, though some still rely on sending people directly to Google maps, not navigation. The portion that's missing from many mobile sites and apps is the ability to get directions from device's current location.
This is an absolute must. You should demand it of your provider or move on. Here's why:
There are statistics that show that people who visit mobile version of car dealer websites buy a car within 24 hours. This is due to being in "buying mode" when they visit mobile sites. They may be out and about. They may be on their way to a day of car shopping.
They may be having a bad experience at a competitor's dealership. It's for these people that you want to make directions as easy as possible to get. They are less likely to ask their salesperson, "What's the address here?" Don't make them ask. Give them the option of getting directions to your store regardless of where they are. If they can be found on GPS, they should be able to get to your location.
Make it easy. Use an app or a mobile site that works directly with their GPS. You'll get more leads, visitors, and sales as a result.