300MPG.org is a web page and blog dedicated to people who take positive action to improve their own transportation options. From electric vehicles charged from the sun to just making sure you have the right amount of air in your tires, we can all make a difference to create a a better future, while still gettin’ around.

The site is administered by Ben Nelson, a self-professed tinkerer, who once almost accidentally built a motorcycle that gets the equivalent of over 300 miles per gallon.

If you have a great project that shows off what the common man (or woman) can do for a cleaner, more sustainable transportation future, let us know, and help share the story.

{ 111 comments… read them below or add one }

1 admin October 19, 2016 at 4:22 pm

The “Open Revolt” controller has always been great! Other when we were in “test to destruction mode” I’ve really never had any issues with it. It’s solid.

2 mitchell campen November 18, 2016 at 10:26 pm

I have a forklift motor I bought for building an electric car – never happened – never found usable batteries. It is for sale. Mitch

3 Rob Lewis November 30, 2016 at 3:14 pm

We installed a Hymotion A123 Conversion Module in our 2008 Prius in October of 2008.

In the past there has been a spark, or arc when we plug in the car to recharge it. We had to discard one extension chord as it had burned out the contacts in the female end of the chord. Recently the female end of the extension chord has welded itself to the male end of the jack in the car and cannot be removed. So does anyone have a suggestion on what we can do to remove it.

Is there someplace that we can take it locally to have it repaired? We live in Shavertown, PA (near Wilkes-Barre). The conversion module was installed by Westboro Toyota in Westborough, MA.

Thanks for your help,

Rob Lewis

4 John Campbell December 8, 2016 at 7:06 pm

I read that you scored some solar panels. I found this web site that has some great info on the installation of panels…http://www.johnsavesenergy.com/Photovoltaics.html

5 Gavin December 28, 2016 at 11:04 am

Issues with 300mpg car DVD order

6 admin January 3, 2017 at 1:09 pm

Hi Gavin, sorry for the delay, glad we got it taken care of for you!

7 Joseph Whitesell January 19, 2017 at 12:55 pm

I am a big fan of your videos, and proponent of what you are doing.
I am considering embarking on an EV conversion myself.
What kind of motor and setup would you recommend for these specifications?
1970 Toyota Hilux Pickup
2300 lbs curb weight with current ICE (and components)
No power steering
4 speed Manual Gearbox

Desired Range: At least 30 miles on a full charge
Desired Speed: 50 mph –> able to attain and maintain this comfortable highway speed for reasonable stints.

What kind of weight would you estimate after conversion?
Do you have any experience or familiarity with hub motors (I am entertaining the idea of using them, highly upscaled of course, after riding an impressive scooter that used them in Burma and reading about the Porsche Semper Vivus a linear drive hub motor vehicle)?
Where do you weigh in in terms of hub motor’s practicality on automobiles/ ability to be used at high speeds?
How difficult is it to integrate the now existing manual transmission into designing a conversion?
Are there any alternative (perhaps maybe even a little out there) methods you have thought about implementing into a conversion, such as alternative drive methods maybe with belts (Such as on a DAF 33 from the Netherlands) or direct chain drives (like on a King Midget) by modifying or perhaps retrofitting them into already existing examples?

Sorry for the novel
Thank You,

8 Justin January 19, 2017 at 8:54 pm

I have a gas powered Vespa in my garage that I would love to convert to electric but I’m not handy – at all. I’m willing to invest, try and make mistakes but 1/2 the sites I read immediately skip over the basics. Can you help? I’m feeling absolutely lost on how to get this project off the ground.

Hopefully (hopelessly?) overly ambitious in Pennsylvania

9 Benoit Lafleur March 27, 2017 at 9:42 am


I bought your CD on vehicle conversion and I just started my project. A 1975 Jeep CJ5. Ok this is not the ideal vehicle for this kind of project but I like this type of vehicle. I would like your comments and your ideas because I am engaging in the unknown.

My web site: http://www.benjeep.com

Thank you for sharing your passion.

10 Ben N March 27, 2017 at 9:53 am

Looks like you are off to a great start!
I was going to immediately suggest you take a look at all the Jeeps on the EVAlbum, but when I went there, I saw that your project was already registered there! http://www.evalbum.com/type/JEEP

In general, always take a look at projects that other people have already done, and learn from them. The other great thing going on right now is that the cost of lithium batteries keep falling, and there are even fairly good sources of USED and salvaged lithium batteries out there.

Keep up the good work,
-Ben Nelson

11 Brent J. Roberson June 1, 2017 at 1:46 pm

Hello, that was a very interesting article about the conversion on your S10. I am thinking about trying a similar conversion on my Sonoma, can you please tell me what was the horsepower of the electric motor you used?

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