On Tuesday, US federal authorities announced that several members of the Tijuana-based Hooligans Motorcycle Club had been indicted for stealing $US4.5 million ($6 million) worth of Jeeps in San Diego County. How'd they do it? Stolen keys? Smash and grab operation? Nah. According to police, these bikers just gained access to a secure key database and then hacked the vehicles' onboard computers so that they could drive back to Mexico undetected.