I could never understand why Nat gas never caught on for cars.
The “explosion” danger is less than that of a gasoline powered car.
Honda builds a nat gas Civic here in Indiana. But the number of available fueling stations is really low, and the cost of a home gas compression rig is quite high.
But the economics seem to work for UPS, a lot of their “last mile” trucks now are nat gas, with on-site fueling at their depots.
Among other things, natural gas costs more and has less energy. It also consists of the greenhouse gas methane and a part of that leaks away during the extraction process.
Hard to store, basically. You either have to compress it and store it in a fairly heavy tank, or liquefy it, which means you have a thermos bottle of very cold liquid which can't be stored indefinitely. Nevertheless, there are a number of fleet vehicles that have been converted to NG.
I have a (stationary) NG fueled standby generator. While it's hard to handle, engines love it as a fuel. When I change the oil on the generator, the old oil looks -- after a year -- almost as clean as the new oil.