eight other carmakers, including ford, g.m., and fiat chrysler are rated as having the leaves. new technologiese lane departure washing and auto emergency braking make high-tech cars safer, but even those are no substitute for an alert, engaged driver. >> these screens should be locked down except for driving essential tasks while a car is moving. it's not rocket science. you want people to be focused on the road. >> reporter: some vehicles allow only limited manual input into the navigation systems while the car is moving. but while many states outlawed texting while driving, there is no federal regulation of driver access to these ever increasingly complex infotainment systems. >> mason: don dahler. thanks, don. and just ahead, a security flaw in amazon's new home delivery system. i just drank tons of water a proall the time, it was never enough. my dentist suggested biotene. my mouth felt more lubricated. i use the biotene rinse and then i use the spray. biotene did make a difference. [heartbeat] whenstuff happens. d... shut down cold symptoms fast with maximum strength alka seltzer plus liq