Potrero Road is a two-lane alternative from Newbury Park to Camarillo that takes you through some twists and turns at the top before straightening out a bit after the initial drop. Here's what the reverse drive looks like, just east of CSU Channel Islands up to just before the Rancho Potrero Open Space after cresting the the top.
If you a driving a big rig...forget this road and head back towards the 101. Trucks with over two axles are forbidden from taking this route with a 7% grade (with the exception of local deliveries).
For those that live in Newbury Park, Potrero Road is a nice way to get to beaches at Point Mugu State Park, including Sycamore Cove and Thornhill Broome.