The same as the driver.
brother
Well since it was only his friends mothers car, and his friend was in it, he would probably get 5-10 in jail and 6 months on probation.
In Farsi, you would say "amoo" for mother's brother.
uncle
Your Uncle.
Your mother's son is your brother or your half brother.
A cousin brother means , the son of the father or mothers , brother or sister.
papu
mamo
your uncle
That would be an uncle.
The word for uncle in Hindi is "चाचा" (chacha) for father's brother and "मामा" (mama) for mother's brother.