The Auto and Technik Museum at Speyer has a vast collection of cars, planes, fire engines and the like, not to mention a varied collection of working musical organs. It is the only museum I know where a Boeing 747 is displayed high up on a group of poles.
There is a sister museum at Sinsheim, not too far away, which is just as good.
Whilst in the café, this collection of bicycles hanging from the ceiling caught my eye.
http://www.technik-museum.de/uk/index.html
Photoshop:
Cropped and Resized
This time last year :- ‘Lonesome Rose’