What is the ruling on owning a pickup truck to transport "mabāsim" (mouthpieces used for shisha pipes) that are used for smoking shisha? And what is the ruling on paying money to police officers at traffic checkpoints to avoid being stopped due to an invalid car license? And is this considered bribery?

It is not permissible to transport shisha mouthpieces, as this constitutes cooperation in sin. As for paying a bribe to avoid renewing a license, there is a detailed explanation: If the license renewal is for vehicle inspection and the safety conditions are met, then it is not permissible to pay the bribe. If it is to pay taxes, and these taxes are rightfully collected, then it is not permissible to pay the bribe. However, if the taxes are collected unjustly and without any actual service, then there is no harm in paying the bribe, and the sin lies with the receiver.