I'm quoting myself to bump these questions so they don't get lost. :bump:
Based on where the store was, Dicentra, what route were they taking back to Ruch? If we know that, we can see what side roads they might have taken. Was the store in Ashland, Talent, Phoenix or Medford? Can you be specific?
Do you know what time they left Ashland? I thought it was close to noonish when the parade was over. But that leaves a lot of time if they were at the store in the late afternoon. Could they have gone to see the new puppy where son and dil were living in Ashland at the time? Probably not likely if they were fighting.
And then we still have to account for the time the car started late at night and got home early in the morning (several hours?). I wish we had the start and stop times for that whole day. I don't know why that hasn't been made public.