This guy has used stock parts to upgrade a Chevy Impala from 250 to 800 horsepower and decrease it’s consumption to 25 mpg.

He’s now planning on a Hummer Hybrid where a jet engine spins up the juice. He reckons he can make it go from 300 to 600 hp and get 60 miles per gallon.

  • yourls_shorturl: http://bit.ly/fqIFOc