and they've now achieved that. they invited me to st. louis for this demonstration. told me to get in a jeep and drive onto the interstate and then they told me they were going to -- i knew they were going to hack the vehicle. but i didn't know what they were going to do. the trick started with small things like turning up the volume of the -- >> we saw the radio goes out of control. the air conditioning goes out of control. the wipers go out of control. they even controlled the speed. >> eventually, they cut the transmission entirely. i was stalled on the highway with no ability to move the vehicle. >> what was this like? >> it was really scary. even though i knew this was coming, i didn't know what they would do. and it was unnerving to find yourself in a two-ton vehicle you can't control that is being controlled by these guys ten miles away. of course it's the -- because it was over the internet, it could have been done from across the country -- >> which is exactly what they wanted to show. these guys wanted to expose the security vulnerabilities of automobiles. how did they do it?