The beautiful car here is a 1936 Cord Armchair Beverly Sedan, and it lives at the Auburn-Cord-Dussenberg Museum in Auburn, Indiana. The museum has been awarded National Historic Landmark status, and Cynthia writes that it is well-deserved. She visited last year and is planning another visit this summer. Cynthia also notes that this small vintage postcard is not nearly big enough to hold her exuberance for the museum :)
The postage Cynthia used is perfect for this card! This is one of five stamps in a series issued in 1988. The US Postal Service is quite enamored of cars and there is usually a new series each year featuring cars. I haven't been fond of recent issues because they have focused on race cars or "muscle" cars. I would rather see an issue that features the US Postal trucks over the years!