New Zealand engineer John Fleming is part of an effort to bypass the hydrogen era and go directly to the nitrogen-hydrogen economy. Texas-based Fleming, 65, is responsible for a string of inventions that produced more efficient, cleaner-burning heating appliances and holds a number of patents. He ... is helping researchers at Texas Tech University look at the potential to power vehicles using liquid ammonia, produced by combining hydrogen and nitrogen. Fleming's most tangible contribution has been a small, cheap processing plant that converts hydrogen and nitrogen into ammonia using a compression and decompression system. It promises on-site production of hydrogen-carrying liquid fuel, solving the problem of storing and distributing (with considerable energy loss) a highly explosive gas from large and expensive centralised plants. Ammonium can be liquefied, produces no carbon or solid deposits and can burn in internal combustion engines carrying a reasonable amount of hydrogen." Based on an electrolyser he devised for potential use in gas fireplaces, the processor offers huge cost savings in the production of hydrogen using electricity. The processor costs US$200 (compared with around $130,000 using large-scale conventional models) and is predicted to produce fuel for about US27c a litre [about $1.00/gallon] before taxes.