http://www.theguardian.com/business/2015/oct/28/its-ok-to-hack-your-own-car-us-copyright-authorities-rule [theguardian.com]
Car owners and security experts can tinker with automobile software without incurring US copyright liability, according to newly issued guidelines that were opposed by the auto industry.
The Library of Congress, which oversees the US Copyright Office, agreed with fair use advocates who argued that vehicle owners are entitled to modify their cars, which often involves altering software.
Automakers including General Motors and other vehicle manufacturers such as Deere & Co opposed the rules. They said vehicle owners could visit authorized repair shops for changes they may need to undertake.