Like the millipedes, centipedes are highly segmented (15 to 177 segments), but with only one pair of walking legs per segment (millipedes have two legs per segment). The head of a centipede has a pair of antennae, jaw-like mandibles (called forcipules) and other mouthparts.
Although compressed natural gas (CNG) is a fossil fuel like diesel, gas and coal, it is far different in terms of its impact on the natural environment.
It is most likely that the first CNG or NGV car was invented by someone also experimenting with hydrogen, gasoline or biofuels. What is known is that in the 1930's in the U. S. there were indeed natural gas vehicles running.Some of these same vehicles also used manufactured gas as well.he history of the first natural gas car is not as clear cut as many of the other vehicles upon these pages. Scientists, engineers and tinkerers worldwide experimented with many kinds of alternative fuels for centuries.