Dirty little secret, get off the interstate and drive in on a state or county road. Their check points are all on the "freeways" (I use the term loosely)
Regards,
GtG
PS My last trip to CA I drove from Nevada on a back road to Scottie's Castle in Death Valley. Did a little sight seeing and ended up in Mohave CA. I like the scenic route when ever possible.
They wave me on through on the motorcycle. What is the purpose of these? Is it concern that the produce will have some pest on it that will impact California crops? I know we have some rules here in Washington regarding apple transport for just that reason.