Quoting Henrik Hoexbroe
Lovely little things! I especially like the blue one, but another solution is needed instead of the old axle-blocks...
Thank you very much! I did not find any other solution without blocking the wheels. Do you have any suggestions? (Maybe I should make this step and start creating display-only models - currently I share a lot of LEGO and working space with my kids. And then a car has to be able to drive...)