NigelM
Recovering Member
Quite likely that the silver canister is a drier/accumulator for the A/C system. It is bigger than I would expect to see in an automobile, however in an EV where it is also cooling the battery pack....maybe?
Alternatively, it looks to me like a large accelerometer which is used for measuring forces and vibration. We use much smaller ones for tracking animal behavior but on a test car something this size could also make sense.