I have been to Sidney , acually lived there for 3 months, some of he worst traffic and most angry/impatient drivers I have ever seen , besides L.A. . so I can see your way of thinking there Hillhatter, Other places in Australia that I have been to that velomobile would do fine.
However
Where I now live a Velomobile would work fine, there is so much traffic here and it is so slow during rush hours ( 6am - 1:30 am , then from 2:30 pm until 6: 30 pm , so using up a lane car in a Velomobile for at least many hours during the day, is not such a big issue,
only a few streets, and the Major Highway , but it would not be allowed there anyway.
In California a Bicycle is allowed , By Law , to take up over 1/2 of a vehicle lane, In Fact I have been told that in California we can take up the whole lane.
Eskimo, Americans would want a slightly bigger and taller version, that of course would cut down on some of the aerodynamic advantages of being very low to the ground and thin profile , however we have better voltages that we are allowed on
E-Bikes , so under 45 mph , being a little wider, longer , and taller would still work out good good enough. and Provide much more safety .