I'd focus on range first.Yes, I would focus on infrastructure, not the range. because even if you plan the trip with enough range, unexpected can happen such as bad weather or road closure forcing you to take longer detour, and then you might run out of range. But if there was charging spots everywhere - along any detour or roads, then there is no need to worry about range.
That way, people don't have to worry about their car being 200 km range and needing to charge up at home or find a super charging station. People can drive freely without needing to find a charging station. At some point they will need one, but there should already be enough of them sprinkled across big cities.
It's already bad enough that charging a car takes forever compared to a 2 minute gas fill up.
It's like cell phones. Do people really need bigger and better batteries in every new iPhone? There's a power plug in every room, and you can charge it in your car. So really anyone should theoretically be able to live with a battery that lasts only an hour.
But batteries get better and last longer over time. People want that so they don't get inconvenienced needing to have their charging cord handy. And they want to charge their phone as infrequent as possible even if there's a power outlet 6 ft away.
Also, the bigger the battery, the more you can do with it until it needs charging. Some apps, games, etc.... all drain the battery. The bigger and better tea battery, the more they can do with it...... like a bigger better battery giving drivers longer range to drive to somewhere as common as Niagara Falls or Montreal without scrounging for a super charger.