Applied online. I had an invite to drive 3 hours to go interview... took it. No travel expenses covered. This was a Monday. Tuesday they called to ask if I could drive up another 3 hours to meet on Friday. It was pretty abrupt and not very considerate in retrospect. First interview took about 1 hour with 2 people. Second round took more like 3 hours and a plant tour. Met and interviewed the plant manager on the second round.