What makes me un easy about the big 3 is they own patents to ALL of the "miracle carburetors". I have researched a little on super mpg, and have seen people attain 40mpg on full size cars with V8s. One method is drawing fuel vapors (combustable) from the float bowl of a carburetor and sending the vapors into the intake (vacuume ports). This uses the "free" vapors as fuel for the engine, it supplements power and helps you use LESS gasoline. <img src="/forums/images/graemlins/confused.gif" alt="" />@ the big 3 for keeping those patents and not using them.