Final answer:
The statement that you must keep an open container of alcohol in the trunk of your car is largely true, as it follows the general principles of Open Container laws to prevent drinking and driving.
Step-by-step explanation:
The Open Container Act typically refers to various state laws in the United States that prohibit the possession of open containers of alcohol within the passenger compartment of a vehicle. This is to deter drinking and driving and to promote safer roads.
The statement that if you have an open container of alcohol in your car, you must keep it in the trunk, is generally true. Keeping it in the trunk separates it from the passengers and reduces the temptation to drink while driving. However, laws can vary by state, and some states might have different specific regulations regarding where an open container may be legally stored in a vehicle.