Bandre,
Since you don't want this site to rank high for your dealership name use SEO to do otherwise. Meaning, use it as a micro site. Build it out to target a specific audience that your main site can't reach. Maybe a niche market.
This may be a bad idea because of restrictions with your Manufacturer.
You could always use canonical tags, no follow, etc... and do you best to keep it from the serps.
Since you don't want this site to rank high for your dealership name use SEO to do otherwise. Meaning, use it as a micro site. Build it out to target a specific audience that your main site can't reach. Maybe a niche market.
This may be a bad idea because of restrictions with your Manufacturer.
You could always use canonical tags, no follow, etc... and do you best to keep it from the serps.