We are going to DLR in Oct. We will be coming into Ca on the 40 then the 15. Our problem is due to health and medication issues, my father who will be on his first Disney trip, has to take sudden and frequent bathroom breaks. If the freeways are OK then not an impossible situation but if we get backed up or jammed then it could turn ugly fast. So rather than risk getting stuck on the 15 or 91, I was thinking of getting off on foothill in Rancho Cucamonga, then taking Euclid south to Edison going west on Edison/Grand through Chino Hills to Diamond Bar Blvd then to Brea and over to Harbor. I know this will take a lot more time but we have all day. We will be getting to the IE about 6am on a Saturday. Don't need to be to our hotel until early afternoon. We will be stopping for breakfast and maybe the Nixon library. Is this route safe? Does it go through any really bad neighborhoods? How long should this way take? I was thinking 2 hrs or so from RC to Harbor Blvd. Please let us know what you think of this plan. Any other routes you have used would also be appreciated