PHEV
HEVs pair a conventional petrol engine with an electric motor.
Only a few years ago the HEV was considered too expensive and too small to be commercially viable.
Right now they are trialling new HEV buses.
You can get here by bus, tram, or HEV train.

SMART Vocabulary: related words and phrases

Road vehicles in general
airboard
all-terrain vehicle
amphibian
ATV
autorickshaw
craft
diesel
gas-guzzling
HOV
hoverboard
hybrid
hybrid electric vehicle
motor vehicle
motorcade
non-motorized
rover
snow groomer
snowcat
vehicle
vehicular