Kind of a loaded question? The Antique Automobile Club of America is the organization that sends out the monthly publication, has a membership, etc. The building in the pic is their new Headquarters, and quite a beautiful building I will add. They have an extensive library that is free for members and one can find just about anything auto related. In their lobby they have a small collection of very significant autos. Not really a museum per se.
Across the street, about 2 miles away is the 'AACA Museum'. This building is NOT affiliated at all with the 'club'. Although if you are a member of the AACA 'club' you get free membership. There was a big kafluffle several years ago between the museum board members and the 'club' resulting in a long drawn out lawsuit. That resulted in the split. From some of the die hard 'club' guys just the mention will bring their blood to a boil! I am a member of the 'club' and have no feelings between the two. In fact I try to get the museum a couple of times a year.
To answer your question, they have a tremendous collection of autos and memorabilia. Def worth a trip. They have horseless carriages up to almost modern stuff. A great collection of buses, some motorcycles and other bits. They usually have some special exhibit that last about 6 months or so to keep things fresh. They have probably the largest collection of Tuckers on the planet with I think 4 cars, a rolling chassis, about 6 motors, Preston Tuckers office and blue prints, and many other Tucker bits.