The Supercharger network isn't the only recharging option for EV users.
Plugshare.com exposes just how many access points are available for recharging on trip - public/govt options, for-pay high-power stations, etc...
Using the trip planner shows dozens of charging options between Graz and Budapest, for your particular case.
It's certainly helped me address some range anxiety as I consider an EV.
How long before Google Maps directions adds these EV-charge stops when you tell it what Electric Vehicle you drive?
Nice. Wasn't aware of that resource. Thanks.
Counterpoint: I just return from a 7,000km trip across Austria, Italy, France, Spain, Germany, and it was fine. No problems at all in France and Germany. I had to drive slightly slower in one part of Italy to reach a SC (unplanned for detour). I drove 1,500km in South-West Spain where there are no Superchargers, charging at hotels or non-Tesla public stations. I added 30 minutes to the journey, once, because I preferred to charge at a nice restaurant and not a (charging-equipped) gas station.
It requires extra planning, yes, but I was actually surprised how it wasn’t constraining. YMMW obviously.
BTW, that 600km range is very theoretical. The real range of 85D is ~420km (driving at 110km/h) and while P100D has better range, it doesn’t have 50% better range.
As an example, I live in Graz, Austria, where there is just one supercharger. It's not massively convenient for where I live in the city, but it's a small city, so it's possibly reasonable. However, last week I drove to Budapest and back, via Slovenia, which is motorway/freeway/autobahn the entire route. Total journey distance is approximately 800kms.
There are no superchargers in Budapest. I could have returned via Vienna, adding another 50kms to the journey, but there is only one, inconveniently located, inner city supercharger in Vienna. I would lose a substantial amount of time leaving the motorway and ring road, to navigate to this sole supercharger.
Instead, I drive my Hyundai diesel and top up at any one of the multiple service stations enroute.
Superchargers need to be a lot more ubiquitous and located much closer to major arteries before this becomes a compelling proposition.
So, I don't think the supercharger network needs to be "slightly more expanded" in Eastern Europe, but greatly expanded and much more convenient.