Having to charge for 40 minutes during a 6 hour trip is a non-issue in my opinion. During a 6 hour trip one has to eat at least one lunch/dinner which should account for 40 minutes. And likely an additional stop at a rest room or leg stretcher for 10 minutes somewhere else.

Electrical charging stations will be everywhere, very soon ,very fast. All restaurants, gas stations and kiosks will have plenty. To attract customers and to earn an extra buck. It's very cheap to install compared to tanks and pumps for flammable and hazardous liquid fuels.