I just bought a 2017 Toyota Hiace campervan van and will be driving it for a considerable amount of time every day. I tested it with an EMF-380 reader when the engine was on and the EMFs are over 300mG on the seats (same as in an aeroplane! The problem with these vans is that you are sitting on the engine/alternator itself. Does anyone have any tips on how to shield the cabin and seating area for EMF protection? Any materials you would recommend and any other tips? TIA