The best way to explain exempt versus nonexempt rules is by pointing to specific employees and then describing exactly what about their jobs requires them to be paid salary or overtime. The problem is common frames of reference. The answer, of course, is television.
California is just the latest state to pass "hands-free" legislation for cell phones in cars. If drivers work for companies that require or expect their employees to use cell phones as part of their jobs, then the employers may also be held responsible for the accidents as well.