My friend bought fireworks on vacation and wants to put them in the car

My friend bought fireworks from a roadside store because they are not sold where she lives.

Her plan is to place them in the trunk and drive across several jurisdictions before returning home.

She has a receipt and unopened packaging. She believes that makes the purchase and transport legitimate. I think it proves only where she bought them.

Current federal, state, local, tribal, road, tunnel, ferry, rental-car, lodging, storage, carrier, and fire-safety rules need direct verification for the exact route and items. A product may be lawful to purchase in one place and restricted to possess, transport, store, or use somewhere else. Heat, vehicle storage, insurance, and rental terms may create additional problems even before anyone lights anything.

I do not want the fireworks in a vehicle I am driving or renting. That boundary does not require me to classify the products or debate whether enforcement is likely.

My friend says we can avoid trouble by leaving them sealed and driving carefully. She also says refusing the bag means wasting her money. The money was spent before she checked whether the items could complete the trip.

The next step is not to hide them better or choose roads based on rumor. She should stop transport, identify the exact products, and contact the seller or appropriate local authority for a lawful return, disposal, or other confirmed option. We should not mail, fly, discard, or ignite them as an improvised solution.

If qualified authorities confirm that transport is permitted under specific conditions, the driver and vehicle provider still need to agree. Legal permission does not force another traveler to accept the risk.

Would you refuse to continue until the fireworks were removed through an authorized process? Is this the purchaser’s problem alone, or does everyone in the vehicle become involved once the items enter the trunk?