Much has been made in recent years of the possibility that fuel-cell-powered electric vehicles (FCEVs) might provide substantial reductions in automotive energy consumption and emissions. However, while some automakers concentrate on developing FCEVs, others are taking a different tack - they are developing vehicles that burn hydrogen instead of gasoline in internal combustion engines (ICEs). By Joerg Dittmer, Industry Analyst for Frost & Sullivan's Transportation Group.