1.5 extra hours would be my expectation as well. If we consider a long trip for vacation 3 times a year, the 4.5hrs invested into charging is offset by less day

1.5 extra hours would be my expectation as well. If we consider a long trip for vacation 3 times a year, the 4.5hrs invested into charging is offset by less day-to-day charging stops with an EV (if you can charge at home), the reduced costs of electricity vs gas and the reduced costs of maintenance. I would optimize the car choice for the 90% use of daily commute instead of optimizing for the 3-times-a-year vacation trips.