Poznan's Motoring Museum is run by the Wielkopolska Motoring Club and shows a compact collection of vintage and notable vehicles. It is a specialist stop, but a worthwhile one if old cars and motorbikes make you linger longer than planned.
The museum sits close enough to the centre to combine with the Imperial Castle and the June 1956 memorials. Check opening times before making a special trip, as small transport museums often keep limited hours.