Complex sentence: After the Padilla case, in particular, it was revealed that there are over a thousand car accidents a year involving US military personal in Okinawa that aren't required to have auto insurance even though cheap subsided insurance is provided for them.
Split into simpler sentences: After the Padilla case, in particular, it was revealed that there are over a thousand car accidents a year involving US military personal in Okinawa. US soldiers aren't required to have car insurance, even though cheap subsided insurance is provided for them.