A push to have cars say "no" to drunk drivers

But now, she said, several companies have cameras that warn drivers if they appear impaired or have taken their eyes off the road. Those types of advances have given Witty hope that automakers will be persuaded by consumers, who want more safety features.

But she is impatient for that to happen. In 2000, Witty’s 16-year-old daughter was killed by another teen who’d had too many tequila shots and was driving 65 miles per hour in a 30 mph zone. According to Witty, the young driver, who was drunk and high on marijuana, “lost control of her car and spun off the road onto the bike path” where her daughter was rollerblading.

“And so my daughter, Helen Marie, looked up and saw the car coming toward her and there was nothing she could do at all but die,” Witty said.