At least enjoy the car for a bit…offer to drive it back to them for no charge! 
edit: Offer to drive it back for only 50% what the other shipper charged. lol
Time… out. The truck driver did not properly mark the bill of lading with the alleged damage that was on there at the time of pickup!?! Tell the shipper politely but, firmly he/she is responsible for any and ALL damage not listed on the bill of lading at the time of pickup UNLESS the shipper can get the dealer to agree to pay for/address the “damage that was already there” in writing. If not then, there is no other acceptable route other than an attorney (and it’ll be cut and dry on the shipper’s dime if so).
PLEASE
Do not sign.
Let the dealerships and transporter company fix this.
Once it’s fix then if you still really want the car I would use the car as being already damaged as leverage and try and get a better discount off the MSRP then they original gave you.
My apologizes if what I suggested has been mentioned. Didn’t have time to go thru all the post.
I think this sums it up for now. Let mods know when there is resolution and someone will reopen.
5 Likes