BTW, although it could look like a skateboard on train tracks, I think its more of a highway and an overpass.

 

If you press the swirch on the dash to much you could wear it out. It is the power button for the cruise, no need to mess with it, turn the cruise on and the top button on the steering wheel is "SET/ACCELERATE", the bottom button is "RESUME/COAST". To dis-engage the cruise tap the gas, that is easier AND safer than pressing the power button when you want to slow down or not rearend the car infront of you.

 

And you would be correct, thats EXACTLY what it is, its the same as the UK road sign symbol,showing a "motorway" or "highway" to you guys with a bridge over it