Looking for any spots I can park my car at a trail head and leave it over night. Rather have it within an hour of Baltimore. Usually I don't mind trails or sites that require a little pre-planning, but on the occasions I find I've got 'tomorrow off' in the middle of the day, a good last-minute spot is a good thing to know. I should I also mention that I don't mind stealth camping that much, but would rather avoid it as often as possible. Anyone know of any good spots?