Why are hydrogen compliance cars worth more in California than electric ones? And how much is a hacked Tesla Model S worth? It's been a busy week of news, considering that it's July. This is the Week In Reverse for Friday, July 11, 2014, right here at Green Car Reports.

Nissan made a splash at February's Chicago Auto Show with a Frontier Diesel Runner pickup concept powered by a Cummins four-cylinder turbodiesel engine. Now we've driven a development prototype of that truck. While it's torquey, we found the prototype's driveability to be a work in progress.

While the U.S. has almost a quarter million plug-in cars on its roads today, there are fewer than 200 hydrogen fuel-cell cars--among other reasons, because there only a dozen or so sites to fuel them up. Still, California rules give hydrogen vehicles an advantage: They get more zero-emission vehicle credits than battery electrics. We explain how the math works.

Oil producer Saudi Arabia wants cars and trucks to be more fuel-efficient, so the kingdom is working on new gas-mileage rules. But the cost of gasoline will stay the same: It's now about 45 cents a gallon there.

Author David Noland, who's reported on his Tesla Model S for us, recently got a couple of chances to drive the new 2014 BMW i3 electric car. He shared his impressions of the i3  and considered how it stacks up against the larger, faster, and considerably more expensive Tesla.

Since it's summer, your thoughts may be turning to road trips where curving routes wind through gorgeous scenery. But if you want to do your road trip entirely on an electric motorcycle, our Ben Rich has some tips for you.

Think you can hack into a Tesla Model S electric car? You could take home a $10,000 prize if you succeed.

Meanwhile, Tesla continues to cooperate with the police investigation into a multi-car Model S wreck in West Hollywood last week. The car thief who stole the electric luxury sedan and drove it at high speeds died this Friday, making him the first known Tesla Model S driver to die in a crash

And finally, two quick items: If you're driving a gas guzzler in Madrid, it'll cost you more to park, and if you've wanted a 2014 Cadillac ELR range-extended luxury coupe, you can now get five-figure discounts on the $75,000 price--and that's before the $7,500 Federal income-tax credit.


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