Governor McDonnell signed a new bill into law that's cracking down on drunk driving.
Anyone convicted of drinking and driving must now have a device put in their vehicle that will check the amount of alcohol in their system.
No matter if it's your first DUI or your third, before you start your vehicle, you'll have to blow into a system called an ignition interlock to make sure you're ok to drive.
Shops that install those systems will likely be getting more business soon.
Currently, an ignition interlock system is required for second offense and up or the first offense if your Blood Alcohol Content is .15 percent or above.
As of July 1st, that will be imposed on all convicted drunk drivers.
Walt Doran was convicted of his first offense DUI at age 72.
He supports the new law but said the technology needs to be refined.
Doran has asthma and has had to change systems because of his condition.
He said the ignition interlock is good for prevention.
"I think they ought to put it on every car. It'll keep people from drinking too much and driving. If you want to eliminate drunk driving, that's one way to do that," said Walt Doran, a supporter of the new law.
The technology is always improving.
Some are anticipating features like cameras and GPS to keep track of the driver better.
one company that installs these ignition interlock systems told us it costs the offender about $80 a month.