The Chevy Volt's lithium-ion battery may be great for a lot of things -- like low gasoline-dependency, for instance -- but when it comes to government regulated crash tests, it's proving to be a fiery problem. As the story goes, back in May, the National Highway Traffic Safety Administration put a Volt through standard side-impact crash testing, and in doing so, "the vehicle's battery was damaged and the coolant line was ruptured." The big issue? The car went up in flames multiple weeks later, seemingly as direct result. That event prompted the NHTSA to further study the safety of the batts in the period after a crash, which culminated in more tests performed just over a week ago to find out if they would prove volatile again -- simply put, they did. The group recently explained that it's "concerned that damage to the Volt's batteries as part of three tests that are explicitly designed to replicate real-world crash scenarios have resulted in fire."