Possible Clues:

• Without giving one the key to enter the vehicle
• Coach without covering one book
• Vehicle of writer unserviceable, dumped by motorway
• I book in less transport for children?
• Transport lacking - that requires one to book in
• Small business, in short, could be on the way
• Airport transport
• Vehicle has less to carry in bottle tops
• Vehicle skirts round middle of suburb
• Charter option for a sports team