100mpg in a plane !

[mgb_phys]

Take a lightweight small aeroplane, swap out the WWI era magnetos that run the engine for the modern fuel injections system in your car and get 100mpg

http://www.aopa.org/aircraft/articles/2008/081230100mpg.html?WT.mc_id=090102epilot&WT.mc_sect=gan

[turbo-1]

What did Steve Fosset accomplish in Rutan's world-circling plane?