A routine traffic stop escalated. and remote carjacking? an alarming vulnerable in many cars revealed as professional hackers take control of critical car systems via the internet. could someone disable your brakes or shut down your vehicles? wolf blitzer is on assignment. i'm brianna keilar, you're in "the situation room." \s. we are following grows concerns about terrorists. president obama prepares this week to visit kenya, a country that's been repeatedly attacked by a ruthless al qaeda affiliate. critical inspection about the president's trip has been exposed, including details of air...