The interstellar Na I D2 absorption spectrum of 209 BAC, the WN 8 central star of M1 - 67, shows a total velocity extent of 60 km/s. This is consistent with the spread of gas velocities expected from galactic rotation, provided 209 BAC is at a distance of 4-5 kpc, implying that it is a massive population I WN 8 star surrounded by a stellar ejecta nebula. If M1 - 67 was a planetary nebula at a distance of only 0.5-1 kpc, the velocity extent of the Na I absorption line should be 5-6 times smaller than that observed. It is suggested that similar observations should be obtained of We 21, recently discovered by Duerbeck and Reipurth (1990) to be a WN 8 star in a ringlike nebula
