generation is figured in he says an electric car produces some ninety grams of carbon emissions the city go see energy just eighty two. yr are the technical specs in a nutshell with this fifty kilowatt engine of a natural gas powered city go can reach a top speed of one hundred sixty five kilometers per hour on the highway though it takes sixteen point three seconds to go from zero to one hundred kilometers per hour so it s not the car for speed demons. with gas guzzlers filling up can be a frequent pain but high hopes says refueling a c.n.c. vehicle is a piece of cake. he says you just have to drive up to the fuel pump put in the nozzle lock it in and you re done. a little filler neck for the natural gas is located next to the one for the gasoline.