I applied through a recruiter. The process took 1 day. I interviewed at Caterpillar (Champaign, IL) in May 2012
Interview
There are only behavioral questions in the interview. When have you gone beyond the call of duty? Tell me a time when you were a leader? Tell me about a time where you had somebody difficult to work with in a group and how did you handle the situation? Pretty basic/expected stuff. Having hands on experience and or design experience would definitely help to get this internship.
Interview questions [1]
Question 1
They are all behavior based. If you look up behavioral questions online you should be fine as long as you prepare.