Just a word of advice, although since you just had your interview and received your information and have already read it, when driving across the border and see nexus specific lanes, EVERYONE in the vehicle has to have their card. One person, say another family member or friend, with a passport and you HAVE to go through the regular line(s). They will tear a strip off you up and down if you go through that lane and they can disqualify everyone from the program, send you back home and, thus, you'd have no choice but to get passports for your next trip. Read the documents very carefully and know ahead of time ALL the restrictions. Things you can bring across are actually more restrictive than traveling with just your passport(s) and caught with any will disqualify everyone along for the trip.