[rsynnott]

So, first of all, realistically most cars in cities are operating at these sorts of speeds for _most_ of the time, anyway. This won't make a huge difference to _average_ speed. But also, this feels like optimising for the past, frankly. Over 50% of cars sold in the EU last year were either electric, or some sort of hybrid (hybrids generally are about as efficient at 30km/h as 50km/h). Netherlands seems to be further along this curve; 45% of cars sold last year were electric or plugin hybrid (stats seem hard to come by for light hybrids), up from 30% the previous year.