Maybe not worth the extra cost of all the work required to absolutely fill the trunk with fuel? 22 minutes spent refueling is incredibly low either way.
It was mentioned in an article about Bolian's run that they were able to pull up between two pumps, start them both, and run one into the car's tank and the other into the trunk-mounted fuel cell at the same time. Double the gallons per minute means half the time wasted!
I don't know if Toman/Tabbutt/Chadwick did that, but even at the same old gallons-per-minute, it means less time pulling into and out of a station, and is still valuable. Five more fuel stops at five minutes a piece would account for about half the difference between Bolian and Toman.
(I would assume this is where their spotters helped too...to make sure there were two available and functioning pumps. Probably even to have credit cards swiped and ready to go as soon as they pulled into the station.)
Cell. From Latin cella (“chamber, small room, compartment”)
biological cell? chamber with biological goop jail cell? chamber with convict inside it fuel cell? chamber with fuel in it electrochemical cell? chamber with electrodes and an electrolyte in it
fuel cell (again)? What do we name an electrochemical cell whose reactants are fluids? fuel cell!
The fuel cell is a catalytic converter of chemical to electrical energy. The hydrogen for it comes from what is called -- even in an interplanetary spacecraft -- a tank.
Calling an auxiliary gas tank a fuel cell has to have originated as some kind of cheesy marketing ploy, to make it sound like a more sophisticated thing than a gas can with baffles, and get more money for it.
Definitions change according to the topic of the conversation. In this context the "cell" containing fuel is a very highly engineered containment cell to ensure fuel isn't spilled or explodes in case of a high energy collision.