3M's fresh entrance into the natural-gas fuel tank arena demanded testing in the extreme.
Researchers blasted the new tank with rifle shells, tossed it into bonfires, dropped it from towers and tried 22 other ways to get it to explode.
By passing the seemingly crazy safety tests, 3M just earned a coveted safety certification and the right to sell its thinner, lighter fuel tanks to truck fleets looking to switch from diesel fuel to cheaper, cleaner compressed natural gas, or CNG, as it's known in the industry.
The fuels have different properties and require different systems and equipment.
Maplewood-based 3M Co. is jumping into this market at a hot time. More garbage trucks, semitractor trailers, city buses and small trucks are converting to natural gas tanks in an effort to cut fuel costs.
Natural gas is harvested domestically, so it's cheaper — generally $1 to $2.50 a gallon, depending on the state. In contrast, diesel will set a driver back $4 a gallon.
So it's no wonder that natural gas is becoming increasingly popular with companies and consumers alike.
Going forward, 3M will market its fuel tank to corporate fleet operators and to folks buying light and medium-weight trucks. Over time, 3M expects the fuel conversion trend to significantly tap passenger vehicles. When it does, the company will be ready.