ok,i'm prolly the last person to buy a pikepass, just never needed one much. so, its the sticker type. does it have to be stuck to the window to work? or can i just tape it on and move from my truck to the wifes car if we need? also,if i'm hauling a trailer do i need to go through the toll booth to pay the difference or will the all knowing eye in the sky detect it? maybe stupid questions but just thinking bout it.