Need an ignition interlock device near Shullsburg? Intoxalock is available at Double G Collision Clinic, a certified Intoxalock ignition interlock installer. We can install your breathalyzer in cars, trucks, vans and other vehicles.Double G Collision Clinic is a U-Haul rental facility specifically engineered from the ground up to assist moving families, not freight. Our moving trucks have more safety features than other moving trucks. In addition, Double G has been an Intoxalock ignition interlock installer since 2010.