Taxi drivers have one of highest brain activity levels of any job

Video
http://video.nationalgeographic.com/video/science/health-human-body-sci/human-body/london-taxi-sci/

Article
http://www.wired.com/wiredscience/2011/12/london-taxi-driver-memory/

Driving a taxi can be more challenging than being a pilot. Think about what goes on in a taxi driver's mind -- all the time:

-Have to navigate continously in 3D -- form a picture of the city from memory, identify their current location in it including their direction, identify the location of their destination, and map route to the destination from where they are now all on the fly
-Have to physically maneuver the car through changing enviornments (roads blocked, traffic jams) while also working on the bigger goal of figuring out how to get where they are going
-Have to continuously read and pick up new info of all types graphic (visual), spoken (verbal), written (verbal) from the environment
-Have to understand the directions people give and "fill in gaps" and give suggestions if the person is not quite sure or only has vague info
-Have to continuously recall building and street names (associative memory), block and building numbers (numeric memory)

High 3D-spatial ability and navigation does not necessarily mean fast processing of 2D info like street maps

This is very interesting because you might assume someone really high in 3D spatial intelligence could just look at a street map and figure things out in a few seconds. But actually, a street map is 2D whereas the 3D brain wants objects to "turn" in the mind, so they might be slow in processing the 2D map.

Having said that, 3D brains would be best at processing 3D maps and models -- like elevation models.

Without question 3D spatial ability is best when it comes to actually navigating yourself through a city--not on a street map but in person like in a car, or flying a plane through clouds, or even weaving your body through traffic in basketball. This is 3D navigation.

The fracking boom is opening up big opportunities for hands-on jobs

Whether you support fracking or not, the fracking oil and gas boom in the US and Canada is opening up jobs for pipefitters and other trades in some states like North Dakota (but not in others...have to look carefully).

Dyslexia could be a good sign you have high spatial ability

Many great artists, architects, movie directors (Steven Spielberg) and other 3D-spatial fields have dyslexia stemming from their high spatial ability. Dyslexia is associated with one or more of several advantages in brain wiring, and high spatial 3D reasoning is one of them. Many (not all) dyslexic people say they "turn" letters in their mind which is what 3D reasoning is all about, turning objects to see them from multiple sides.

Slow reading speed or difficulty reading could be a tip-off that you should investigate these talents i.e. "the dyslexic advantage". (While we're at it, same could be said of ADD)

The Unappreciated Benefits of Dyslexia
http://www.wired.com/wiredscience/2011/09/dyslexic-advantage/

"It’s a huge mistake to regard a dyslexic child as if his or her brain is trying to follow the same pathway of development as all the other kids but is simply doing a bad job of it. In reality, the brains of kids with dyslexic processing styles are actually developing in a very different way. They establish a different pattern of connections and circuitry, creating a different kind of problem-solving apparatus."
Dyslexic advantage
http://www.wired.com/wiredscience/2011/09/dyslexic-advantage/