Visit the following Pages & read both if you are driving to pick up:
Bring a puppy crate, a box or large laundry basket to keep your puppy in, when you come to pick it up. A crate is best when you are driving by yourself, so you don't get distracted by a pup trying to climb out of the laundry basket.
Also bring some extra towels or blankets in case of accidents or a pup getting car sick [and a trash bag or old shopping bag, just in case you need to put icky stuff in it], a toy, and for longer trips, some bottled water.
If you have a long trip home and need to stop for a potty break - please keep in mind that young puppies are still susceptible to exposure to parvo, distemper and other debilitating or possibly deadly puppy diseases - so take precautions!
While they may have their first or even second set of shots, this is no guarantee that they cannot get parvo etc if they are exposed to it, as we do not know for sure when the maternal antibodies stop working and the pup makes it own antibodies after injection with the puppy shots [this is why we suggest a series of 3 sets of shots].
Don't stop at Welcome Centers off the Interstate, and don't stop at busy gas stations for potty breaks. This is where everybody who travels with dogs, goes for potty breaks and where the potential for exposure to communicable puppy diseases is the greatest.
Bring some pee pads or newspaper and a laundry basket for a younger puppy, so it can potty safely there without messing up your car. For an older pup, stop away from busy areas and find a quiet spot somewhere on a country road for a potty break.