BMW rivalry sparks luxury sedan arms race   •   Defender Dakar concept hints at future rally car production   •   Software Glitch Halts Tesla Cybercab Robotaxi Ride   •   Audi A8L Leads 2004 Luxury Sedan Showdown   •   Italian police receive new Lamborghini Temerario   •   BMW rivalry sparks luxury sedan arms race   •   Defender Dakar concept hints at future rally car production   •   Software Glitch Halts Tesla Cybercab Robotaxi Ride   •   Audi A8L Leads 2004 Luxury Sedan Showdown   •   Italian police receive new Lamborghini Temerario   •