I drove rental car 11-12 hours a day and spent 2 days to get there. 3/4 of driving time is 120 km that hardly enjoy in BC.
I would say we spent 1/2 less travelling cost compare with air passage plus renting car locally. The down side of driving to LA is to drive back same way we drove South on #5.
Therefore, we took different route back when we have the 2nd trip.