The story
- Proto-Indo-European*m(y)ewh₁-
- Proto-Indo-European*m(y)owh₁éyeti
- Proto-Italic*moweō
- Latinmoveō
- Latinmōtor
- Middle Englishmotour
- Englishmotor
- Proto-Indo-European*h₃reǵ-
- Proto-Indo-European*h₃réǵeti
- Proto-Italic*regō
- Latinregō
- Latinrēgula
- Proto-West Germanic*regulu
- Old Englishregol
- Latinrēgula
- Old Frenchreille
- Middle Englishrail
- Englishrail
- English todaymotorail
Etymology from Wiktionary, CC BY-SA 4.0.