[Dionysus]

Ok, I'm taking a weekend trip to another college...I think it's like two hours away from us. Since this is going to take some gas, my mom said I ought to offer the driver some gas money. However, I've been out of town many times and NONE of the passengers offered gas money. I don't think it's fair that I should have to pick up all of the slack if other passengers don't pay, yet I agree w/ my mom, it's rude not to offer any. How I should I handle this if no other passengers offer gas money?