Related Clues:

• Oxford designation
• Extra-wide, as footwear goes
• String on tiny batteries?
• Routing org
• Org. with a driving school program
• Small-sized battery
• Car-towing gp
• Car decal abbr
• Big tower letters
• Essence of the puzzle's theme
• Wide, as wingtips
• Not very wide, as wingtips
• Car owners' org
• Honor roll grades
• Good grades