Cut by the Ludwig & Mayer foundry in 1930*, after drawings by Karl Sommer. Motor is decorated with open stripes that look like chrome reflections or speed lines. Caps and numerals only. Apparently with narrow alternates at least for NRS. [1931 use]
Dynamo is a solid companion with lowercase.
Motor has been digitized more than once, most successfully by Steve Jackaman as Motorcross.
*) Luc Devroye lists this designs as Vulcan with a 1929 date. However, this is not the Vulcan listed by Reichardt as a Mergenthaler face in Bold and Bold Italic from 1929. It might have been an export alias of Motor.