center director don hillebrand says the engines are currently on a few u.s. models and offer about 25% better fuel economy than conventional ones. >> you have injectors directly over the combustion chambers, and they direct and they inject exactly the precise amount of fuel into the combustion chambers for each cycle. and so you have control of micro particles of gasoline over micro seconds. you know exactly what goes in. you can control exactly how it burns. and, you know exactly what comes out after the combustion happens. >> reporter: hillebrand thinks electric vehicles and hybrids will also become more mainstream. auto companies are also likely to use lighter materials and improve aerodynamics, which will also save on fuel. argonne researchers say these new technologies will be expensive, but they could save consumers a lot of money at the fuel pump. diane eastabrook, "nightly business report," lemont, illinois. >> susie: here's what we're watching for next week: our friday "market monitor" guest is adam parker, chief u.s. equity strategist at morgan stan