yes, we are going to need some details in order to properly answer your question.

if you can put it in a kritter keeper and place a blanket over it for the drive that might work, or i assume that it will come in some sort of container that they will give you at the store? if it is a transparent container you should cover it with something to minimize stress. if it is a gecko that requires heat and it is more than a 10 minute drive or so you can place a heat pack below the container as long as you check to make sure it isn't too warm inside the container (wrap the heat pack in some paper to keep it from getting too hot if necessary). if you are getting something like a crested you don't really need to give it any more heat than the normal heat in the car since they don't like it that hot and can withstand a little cold for short periods of time.