1.goods list
you have to prepare one list of goods bring with you, and another one list of goods to follow.
you have to make 2 copies of each list, one for yourself, and one for them.
2.car
I only have 1 car, and it's on the list to follow, i don't know your situation.
3.mapple card and sin card
both of the cards will be mailed to you in 4-6 weeks to the mailing address you provided when you landing.(it must be canada address).
you can not submitted your application for the sin card in the border, you have to go to the local office to do it. they open from mon. - fri., you can get the details of their offices through cic.gc.ca - after you landing....., info like address, hours, phone number and the information you have to provide to them.