A fine of up to 10,000 euros: You should not take this everyday item into the car. In addition to knives, other items in the car can cause damage or become expensive if they are stolen or stored improperly.
Electronic devices such as laptops, cell phones, tablets or, above all, power banks should not be left in a car to prevent damage or even fire. In Austria you can even expect your vehicle to be confiscated from March. The rules have also been tightened for drunk driving.