Hybrids far exceed mileage and emissions Standards Your comment does not make any sense except for you to counter a remark that disproves mileage claims of SaviCorp. Hybrids exceed all EPA and Air Quality Emissions Standards and their objectives, already If improving the gas mileage without invalidating the warranty of a Hybrid is your goal then go right ahead Serge drives a Prius not a DynoValve driven vehicle I think this tells you everything.