Don't forget build out of "Tesla Network" fleets. Once FSD is here that will keep them busy too.
I think we can confidently assume this is a few years out. However, I do think that at some point Model 3 will be available for lease. And I do think that once we have cars returning from leasing and if - which is still a little more "if" than "when" - FSD is widely available and robust enough for car sharing, the Model 3 will be a really cool carsharing car: with a 1 Million Miles drive train, all software controlled interior, the inwards facing camera all hardware already existing... But it will take a long time to unlock that value.
More so in Denmark than say Switzerland. The price of electricity is also more expensive in Europe than the USA. A look at difference is gasoline/diesel prices doesn't realize the savings it would suggest.
Also I am told that most cars in the Model 3 class are purchased/leased as company cars where prices are negotiated optimally.
All true. On electricity: more and more solar system in Germany are falling out of the subsidies (after 10 years) and thus are now producing "waste" electricity. I imagine there are a number of folks that try to do something productive with this kind of electricity. I don't however foresee this to be millions of people (more like hundreds/few thousands of people).
One data point on prices in DK:
The cheapest Model 3 is currently DKK
464.724 (AWD, LR, PUP, areo wheels, no EAP, black)
The most expensive Model 3 DKK
668.734 (Performance, AWD, LR, PUP, EAP, colors (e.g. red) everything you can chose)
The cheapest Audi A4 is currently DKK
374.990 (it is really naked, I doubt anybody orders one of those...)
The cheapest Audi A4 Quattro (since there is no RWD Model 3 in Europe yet) is: DKK
546.445 (again, this car is de-facto naked)
The most expensive Audi A4 - honestly I'm lost with all the extras Audi offers. But the most expensive "base version" is DKK
671.227 so this is by far not maxed out but more a starting price for the A4 with that particular engine.
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I know that Denmark is different from other European countries. But at least here in DK, the Model 3 is extremely competitively priced. The most expensive Model 3 Performance with all options chosen is still cheaper than the naked "best of the best" A4 Sedan 45 TDI quattro with 231 horse power that makes in in 0 to 60 in 6,3 seconds...