I was interviewed by 5 people (it's usually only 4 though), each about 30 minutes long. Very friendly people. The ME's didn't have technical questions but the EE's did so be prepared for that. They pay for all of your expenses and hold a networking event the day before.

Basic questions on resume and interns. Interview was by four different panels of one hour each. Nothing too difficult. Questions were focused on design experiences and how you would fit into the company etc. Engineering and supply chain professionals were present in the panel.