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Modded Hybrid Cars Get Up to 250 MPG

artemis67 writes "Politicians and automakers say a car that can both reduce greenhouse gases and free America from its reliance on foreign oil is years or even decades away. Ron Gremban says such a car is parked in his garage. It looks like a typical Toyota Prius hybrid, but in the trunk sits an 80-miles-per-gallon secret -- a stack of 18 brick-sized batteries that boosts the car's high mileage with an extra electrical charge so it can burn even less fuel. Gremban, an electrical engineer and committed environmentalist, spent several months and $3,000 tinkering with his car."

4 of 1,359 comments (clear)

  1. Of course, that's cheating ... by dougmc · · Score: 5, Informative
    If you charge your battery by plugging it in at the house, then you're cheating. MPG doesn't mean much when all the power doesn't come from the gas.

    By this reasoning, I could build a car that has a little 1 horse power engine and a big bank of batteries which are charged by plugging it in at night. I could claim 1000 mpg, but that doesn't actually mean that my car is more efficient than any other car.

    I agree that this may be useful, sort of more of a middle-ground between hybrids and electric cars, but really they should stop making mpg claims.

  2. *NOT* 250mpg by oneiros27 · · Score: 5, Informative

    I've built electric cars. (college solar car team).

    This car does not get 80 mpg. It uses 1 gallon of gas for every 80 miles it travels ... but he gets power from the wall, which had to come from somewhere.

    Although large power plants may be able to make electricity more efficiently, he has to deal with transmission losses, and then storage losses from the inefficiency of battery storage. And he has the extra weight of 18 more batteries.

    The only advantage wall-plugs do on electric vehicles is move where they're poluting -- it moves to the power plant, instead of the point of use.

    Billing any of these cars as '250mpg' unless gallons of gasoline is the only input to the system is a disservice to everyone.

    --
    Build it, and they will come^Hplain.
  3. One person suffering trade offs is not conclusive. by nick_davison · · Score: 5, Informative

    Politicians and automakers say a car that can both reduce greenhouse gases and free America from its reliance on foreign oil is years or even decades away. Ron Gremban says such a car is parked in his garage. It looks like a typical Toyota Prius hybrid, but in the trunk sits an 80-miles-per-gallon secret -- a stack of 18 brick-sized batteries.

    And as the average American wants a big SUV and certainly isn't going to accept downgrading to something the size of a Prius and losing all of their trunk space to 18 brick sized batteries, it looks like the politicians and auto makers are correct.

    In 1904 or whenever it was, two guys managed to invent a plane that, yes, technically could fly. A full hundred years later, why don't we all have our own planes or flying cars? Because, for the average person, they're totally impractical - they simply cost too much and have too many trade-offs for the benefits gained.

    A Prius stacked full of batteries with no trunk space is exactly the same: Sure, you can do it. But that doesn't mean everyone in America is going to rush out and get one.

    The theory is that it'll take years or decades to reach the point where it is practical for the masses. And that theory remains true.

  4. Re:MPG by Anonymous Coward · · Score: 5, Informative

    There should be one coming to the US market this year:

    http://www.hybridcars.com/ram.html