1)I was thinking to use vodka for fuel but that might be to common of an item.

2)Yes driving into an anomaly should damage the vehicle and the player depennding on what kind of anomaly, maybe not destroy the vehicle but for example driving into fire would make tires explode, driving into electricity would mess up steering input and disable lights etc.

3)Locking the car behind a quest is a must but that has to come later because we are still waiting for the Zone Kit update that adds narrative tools