https://govarde.dk/wp-content/uploads/2017/08/bil1.jpg
Madsen 20mm autocannon mounted on a Nimbus sidecar, they where used, quite successfully, against german armor and vehicles April 9th 1940 with 2 Panzer kills, and 11 armored cars knock outs for 3 losses confirmed over the six hours fighting took place.
drive bike into position, pew pew a 10 round stripper clip at 400 RPM, relocate to the next ridge, one on the picture has a 60 round drum.
here it is being deployed.
https://upload.wikimedia.org/wikiped...%BCd_Danes.PNG