No, most likely not. I'd recommend really reading through the EMP Commission report from a few years back. Granted, they only tested just under 50 vehicles, etc. but the test results aren't near as dire as most have been led to believe.
For example, most of the cars started back up (though some did have minor electrical glitches like a busted gauge, nonworking light or signal, etc.). Furthermore, from an aerial EMP burst, a lot more would be protected than one would think. Wouldn't need an actual Faraday cage. Anything that had a large metal roof over it would likely be shielded pretty well from it.
Granted, with the actual grid down, would still be horrible, but not near as dire as this book would make it seem (despite that the guy really did his research). Even the researchers on the Commission were a bit surprised how much actually still functioned from what they tested.
Though these days, the planes and cars that rely on computer steering are simply in for an accident. With most cars, an EMP would shut off the engine, so you'd have to stop, but you can still steer and brake (though you won't have the power assist of power steering). With one of these new cars, you lose steering. Doing so at 70mph, means you're probably going to die.