I've been exploring fuel alternatives for some time and have been running one of these on my car with spectacular results (around 40MPG). I am curious to know if anyone here has come across these or has used them as this is possibly a very viable option for improving fuel efficiency today. If it were embraced by the auto industry cost effective kits could be developed and retrofitted into almost every vehicle on the road today. I have seen efficiencies ranging from 15 to over 50% improvement. I would like to know by anyone in the auto industry "know" why this option isn't used and why it hasn't become mainstream or embraced by a third party capable of producing it.