Apologies, this came out sounding negative:

Rezwan wrote:
2) There’s lots of support for solar and wind, but ultimately, these are too diffuse (and require a lot of space) so if we ever want to get to a fully electric vehicle world, we need to get some real power online – we need to make fusion happen.

A better way to put this is that solar and wind are great but only cover x% of the ideal world wide demand for electric vehicles, so here’s what we need to go totally electric – here’s how much fusion we need.

Info graphics available at David MacKay’s “Without the Hot air” (although this is all UK data)

Auto demand: http://www.inference.phy.cam.ac.uk/withouthotair/c3/page_29.shtml

Demand vs. Supply: http://www.inference.phy.cam.ac.uk/withouthotair/c18/page_103.shtml

The red stack in figure 18.1 adds up to 195 kWh per day per person. The
green stack adds up to about 180 kWh/d/p. A close race! But please
remember: in calculating our production stack we threw all economic,
social, and environmental constraints to the wind. Also, some of our green
contributors are probably incompatible with each other: our photovoltaic
panels and hot-water panels would clash with each other on roofs; and our
solar photovoltaic farms using 5% of the country might compete with the
energy crops with which we covered 75% of the country. If we were to lose
just one of our bigger green contributors – for example, if we decided that
deep offshore wind is not an option, or that panelling 5% of the country
with photovoltaics at a cost of £200 000 per person is not on – then the
production stack would no longer match the consumption stack.