Alabama Code states:
So there is your clear definition of a vehicle. And accept in Title 32, bicycles are exceptions to this definition due to the human power factor.Section 32-1-1.1
(81) VEHICLE. Every device in, upon or by which any person or property is or may be transported or drawn upon a highway, excepting devices moved by human power or used exclusively upon stationary rails or tracks or electric personal assistive mobility devices; provided, that for the purposes of this title, a bicycle or a ridden animal shall be deemed a vehicle, except those provisions of this title, which by their very nature can have no application.
This says there is no open carry in a vehicle in Alabama. Any firearm carried in your vehicle requires a permit for concealed carry.Section 13A-11-73
License to carry pistol in vehicle or concealed on person - Required.
No person shall carry a pistol in any vehicle or concealed on or about his person, except on his land, in his own abode or fixed place of business, without a license therefor as hereinafter provided.
There are your exceptions...Section 13A-11-74
License to carry pistol in vehicle or concealed on person - Exceptions.
The provisions of Section 13A-11-73 shall not apply to marshals, sheriffs, prison and jail wardens and their regularly employed deputies, policemen and other law enforcement officers of any state or political subdivision thereof, or to the members of the army, navy or marine corps of the United States or of the national guard, or to the members of the national guard organized reserves or state guard organizations when on duty or going to or from duty, or to the regularly enrolled members of any organization duly authorized to purchase or receive such weapons from the United States or from this state; provided, that such members are at or are going to or from their places of assembly or target practices, or to officers or employees of the United States duly authorized to carry a pistol, or to any person engaged in manufacturing, repairing or dealing in pistols, or the agent or representative of such person possessing, using, or carrying a pistol in the usual or ordinary course of such business, or to any common carrier, except taxicabs, licensed as a common carrier, or to any person permitted by law to possess a pistol while carrying it unloaded in a secure wrapper, from the place of purchase to his home or place of business, or to or from a place of repair or in moving from one place of abode or business to another.
I think it is clear. There is no inconsistency. It simply says to carry your weapon period in the vehicle requires a license to conceal carry. It doesn't matter if it is on the seat or under the seat. It must be unloaded and in a "secured" wrapper. So even if it were in the trunk, it would need to be at least, unloaded and secured.