I am considering placing an order for the Model Y LR AWD. If I place an order with full self driving, can I modify it later to remove it without penalty? Also, if they release a single motor version after I place my order, would I be able to change the entire car configuration to that? Finally, if I decide to cancel my order all together, am I just out the $100 order fee or are there any other potential fees I might encounter? Thanks in advance!