Vehicles; apparatus for aligning trailer and vehicle so they may be hitched together for towing; apparatus for aligning a vehicle and caravan for hitching; apparatus for locomotion by land, air or water; apparatus for towing vehicles; audible alarms for vehicles; boat trailers and trolleys; camping vehicles; caravans; caravan hitching guiding apparatus; guides or measures for aligning vehicle and towed trailer; warning alarms for vehicles and towed vehicles; towing apparatus; tow hitch devices and apparatus; towing attachments and connections for camping vehicles, caravans or trailers; trailers; trolleys; and parts and accessories thereof