A ".30 kilowatts." (lines 18-19) refers to the amount of energy needed to run a car at 80 km/h.
B ".240 kilowatts." (line 20) refers to the energy consumed by a car driving along a 160 km road.
C ".375 kilowatt-hours." (line 26) refers to the total energy spent by any car on 12.5 hour trips.
D "6.25." (line 28) refers to the number of hours needed to consume 240 kilowatts.
E "-45%" (line 47) refers to the reduction in oil consumed in transportation.