Little, a consultancy that has investigated the matter, the running costs to a driver of a fuel-cell car that gets its hydrogen from natural gas would be comparable to those of one that used clean petrol.
And truck driver shortages and high fuel costs made truck transportation more difficult.
In reality, however, much of a car's fuel economy is delivered by its driver.
For any lap outside that time, a driver is docked one lap's worth of fuel for the race, which harms his strategy.
Multiple operating modes will allow the driver to tailor various performance parameters to accentuate maximum fuel economy or a sportier response as desired.
Mercedes' Nico Rosberg, who set the fastest time in first and second qualifying sessions, retired on lap 27 due to an electrical failure, while Sauber driver Nico Hulkenberg did not even start the race due to a fuel-system problem.
It is left to the driver to decide when and if they want to squeeze every drop of fuel to its fullest extent.
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Aside from the sheer inconvenience of having to call for assistance or hike to the nearest gas station (and hope they have a fuel container available), suddenly hitting empty can put a driver and passengers in peril.
The driver may have stopped in Molo to siphon off some of his employer's fuel and sell it to locals.
If the Mustang flies with a full cabin, its fuel efficiency at 41, 000 feet rivals a Honda Accord with a solo driver at 70mph.
Executives at GM and Chrysler touted demand for more fuel-efficient vehicles in the face of climbing gasoline prices as a key driver of March sales alongside an improving U.S. economy.
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Of course, the computer system UPS uses to track this information and other data to optimize driver routes isn't cheap, but the concept is as basic as it gets: Using less fuel saves the company money while reducing greenhouse gas emissions.
Play music and you'll get full album art on display in the center stack, but you'll also get a smaller version right up on the driver's display behind the wheel, where it'll sit next to more important information like speed and fuel level.
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