I wish I could think of a catchy title...
But all the good puns are already taken.
To mike brockington: I think my lack of a good title is because I hit my head falling out of the chair on this one!!
Seriously though, I think the conspiracy theories are overdone on this one. I saw this on TV a while back. Both the show and the car were very long on glitz and short on physics.
I can't remember how many pounds of Pounds the silly thing was to cost but I do seem to recall you needed a rather large truck (lorry if you prefer) to carry the payment in. Although a full sized car would probably be adequate if one were paying in gold bars. (Even then it would be best to use care not to overloading the suspension.)
On a related note.... Li-ion?!?!?! Give me a break. I forgot how many cells this thing had but it was a BUNCH!! If my laptop experience is representative, I expected about $50/mile when you start replacing these things after a year or so - more if you drive them below 10% of course. And while considerably more ecco-friendly than your own personal RTG, this trunk load of batteries surely is no answer, regardless of the question.
Overall it sounds like another hopeless idea meeting its expected fate.