Well, i have a friend who lives very close to me who offered me a ride to school and back in his car( i don't even have my license yet).anyways, he lives opposite me and i know him well enough.My question is, i feel a bit guilty about taking free rides from him as it takes some cash to fill up the gas etc. I am just wondering if i am going to come across as too serious or formal if i ask this question. Btw, i live in the US but i moved here like 5 yrs ago but i don't know what the norm is here for car rides and stuff in HS.