@Ian Michael Gumby
"You have buses that run on alternative fuel"
They are still the exception rather than the rule though.
"and you already said the magic word... they are more efficient based on the number of people being served."
Only in comparison to similar fuel individual use vehicles. Replacing diesel buses with leccy cars would produce less pollution, both in general and certainly at the point of use.
"The one thing about buses over rail is that they can drive anywhere. Even a light rail needs to have tracks laid down... But there's a solution for that... Electric buses which use overhead cables for power."
Um, if you need to rely on overhead power then you remove the option to drive *anywhere* so you may as well put down electric light railways, such as the trams already in place in Manchester, Nottingham etc. Not sure we would be happy with overhead power stringed throughout our towns and cities - not only is there an inherent danger (for full coverage these things would have to pass right by people's 1st / 2nd floor windows) but also with the commodity price of metals they would cost a fortune to install and then they wouldn't last very long.
"Plan now for nukes because it will take 10-15 years to build a power plant and you'll need them if everyone wants electric vehicles..."
I absolutely agree. If anything I would go further and say we need to move pretty much all of our leccy generation over to nuclear, not just for cars and light rail.