hypermiling

== English == === Etymology === From hyper- +‎ mile +‎ -ing. === Pronunciation === (UK) IPA(key): /ˈhaɪpəmaɪlɪŋ/ (US) IPA(key): /ˈhaɪpɚmaɪlɪŋ/ === Noun === hypermiling (uncountable) Driving a motor vehicle slowly so as to maximize fuel efficiency. Synonym: ecodriving ==== Related terms ==== hypermiler