There'* a lot of country'* that use LPG for cars. The US wont do it because LPG can explode. We all know gas wont do that. Can you see me rolling my eyes here. I don't think you will get as much power from it, but for daily driving, it would be a great alternative. Would make a nice project car.
The EPA has kept CNG conversions out of legal reach, you have to get any CNG converted car to inspected to EPA standards. The certification costs 10,000 dollars. CNG is a ton cheaper than gas, and even while they have a shorter range, Americans used to drive cars that went 6 miles on a gallon of gas, thats just the way I see it though.
I do almost nothing but city driving due to school and work where the fastest I go is 55 and thats just to get to town so I thhink i could benefit from it, be nice if the car could be a duel fuel system
hell i've put over 4k on my car this month and have seen the prices raise in different states. the last time i filled up was just north of milwaukee and it was $3.359 i took on 12.851 gallons for a lovely total of $43.17 and looky there i got to go fill her up again. may go get ethanol this time it'* only $2.47 here