Volvo is on a similar path: http://www.extremetech.com/extreme/154405-volvo-hybrid-drive-60000-rpm-flywheel-25-boost-to-mpg http://www.extremetech.com/extreme/1

Volvo is on a similar path: http://www.extremetech.com/extreme/154405-volvo-hybrid-drive-60000-rpm-flywheel-25-boost-to-mpg http://www.extremetech.com/extreme/154405-volvo-hybrid-drive...