This just appeared on my newsfeed:
Is Gannett Buying a Clunker in Cars.com? - Businessweek
It's the same as small-time jewelers/watchmakers; it's either the big chains, or online. Besides planning your life after the dealership, I would seriously encourage you to think on how you could adapt your business to the times. How can you take advantage of new mobile technology? Have you considered new, export markets? Wholesale? Fleet sales for oil/gas/mining/airlines/contractors/VIP?