auto
automobile
benzene
blue
car
chemicals
conservation
conserve
convenient
danger
diesel
economical
economy
efficient
energy
engine
ethanol
fill
flame
flammable
fuel
fumes
gallon
gas
gasoline
green
heat
hybrid
liter
miles
motorcycle
off
oil
per
performance
petrol
petroleum
pit
pump
red
refill
station
stop
suv
tank
tanker
top
transport
vehicle
yellow