they were talking about this
they were talking about this on car talk on public radio a year or so ago, they never said that it might not be leagle, just that it wasn't safe, and if it is illeagle some place, I would check if they count havieng the clutch in, as being in neutral, because they are different.
I could understand it being illeagle to coast with the engine off, as your brake booster can run out of vaccum, if you have power steering that's not assisting you, and if you need to speed up for evasive manuvering...
there was a car at one point in time, that had a freewheel mode so you could coast, but if you hit the gas you would speed up, the rachet to do this would have to be pretty sturdy, but I like the idea and wish I could do that on my motorcycle.
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